diff --git a/src/main/java/com/peanut/modules/book/service/ShopProductService.java b/src/main/java/com/peanut/modules/book/service/ShopProductService.java
index ffd9a61..37aedad 100644
--- a/src/main/java/com/peanut/modules/book/service/ShopProductService.java
+++ b/src/main/java/com/peanut/modules/book/service/ShopProductService.java
@@ -38,6 +38,14 @@ public interface ShopProductService extends IService<ShopProduct> {
     PageUtils queryPageactivityprice(Map<String, Object> params);
 
 
-    void rollbackStock(BuyOrder buyOrder);
+    /**
+     * 回滚订单行 shop_product 库存与销量。
+     * @param skipShopProductIds 已由 inv 出库回滚加过 shop 的商品，跳过库存回加（仍回滚销量）
+     */
+    void rollbackStock(BuyOrder buyOrder, java.util.Set<Integer> skipShopProductIds);
+
+    default void rollbackStock(BuyOrder buyOrder) {
+        rollbackStock(buyOrder, null);
+    }
 }
 
diff --git a/src/main/java/com/peanut/modules/book/service/impl/BuyOrderServiceImpl.java b/src/main/java/com/peanut/modules/book/service/impl/BuyOrderServiceImpl.java
index d3ef609..5e45fc3 100644
--- a/src/main/java/com/peanut/modules/book/service/impl/BuyOrderServiceImpl.java
+++ b/src/main/java/com/peanut/modules/book/service/impl/BuyOrderServiceImpl.java
@@ -1201,6 +1201,7 @@ public class BuyOrderServiceImpl extends ServiceImpl<BuyOrderDao, BuyOrder> impl
         return refundFee;
     }
     @Override
+    @Transactional(rollbackFor = Exception.class)
     public void  refundOrder(BuyOrder buyOrder, MyUserEntity user, int refundId){
         if(buyOrder.getCouponId()!=null && buyOrder.getCouponId()!=0){
             couponService.rollbackCoupon(buyOrder.getCouponId());
@@ -1229,10 +1230,10 @@ public class BuyOrderServiceImpl extends ServiceImpl<BuyOrderDao, BuyOrder> impl
             //撤回课程权限
             log.info("====remove========="+buyOrder.getOrderSn());
             removeCourseToUser(buyOrder);
-            //回滚库存
-            shopProductService.rollbackStock(buyOrder);
-            // 回滚 inv 售出流水：回加采购 remain_quantity，售出记录 del_flag=1
-            inventoryManagementService.rollbackSaleByOrderId(buyOrder.getOrderId());
+            // 先按出库流水回加 inv remain + 出库商品 shop；再回加订单行中未出现在出库流水的商品 shop（如套书本身）
+            java.util.Set<Integer> invRestoredShopIds =
+                    inventoryManagementService.rollbackSaleByOrderId(buyOrder.getOrderId());
+            shopProductService.rollbackStock(buyOrder, invRestoredShopIds);
         }
     }
 
diff --git a/src/main/java/com/peanut/modules/book/service/impl/ShopProductServiceImpl.java b/src/main/java/com/peanut/modules/book/service/impl/ShopProductServiceImpl.java
index 24a5b13..8a89f18 100644
--- a/src/main/java/com/peanut/modules/book/service/impl/ShopProductServiceImpl.java
+++ b/src/main/java/com/peanut/modules/book/service/impl/ShopProductServiceImpl.java
@@ -141,14 +141,23 @@ public class ShopProductServiceImpl extends ServiceImpl<ShopProductDao, ShopProd
     }
 
     @Override
-    public void rollbackStock(BuyOrder buyOrder){
+    public void rollbackStock(BuyOrder buyOrder, java.util.Set<Integer> skipShopProductIds){
         QueryWrapper<BuyOrderProduct> buyOrderProductQueryWrapper = new QueryWrapper<>();
         buyOrderProductQueryWrapper.eq("order_id", buyOrder.getOrderId());
         List<BuyOrderProduct> buyOrderProductList = buyOrderProductService.list(buyOrderProductQueryWrapper);
         for (BuyOrderProduct buyOrderProduct : buyOrderProductList) {
             Integer productId = buyOrderProduct.getProductId();
             ShopProduct product = this.getById(productId);
-            product.setProductStock(product.getProductStock() + buyOrderProduct.getQuantity());
+            if (product == null) {
+                continue;
+            }
+            // inv 出库回滚已加过 shop 的商品不再重复加库存；销量仍回滚
+            if (skipShopProductIds == null || !skipShopProductIds.contains(productId)) {
+                int stock = product.getProductStock() == null ? 0 : product.getProductStock();
+                product.setProductStock(stock + buyOrderProduct.getQuantity());
+            }
+            int sales = product.getSumSales() == null ? 0 : product.getSumSales();
+            product.setSumSales(Math.max(0, sales - buyOrderProduct.getQuantity()));
             this.updateById(product);
         }
     }
diff --git a/src/main/java/com/peanut/modules/master/controller/InventoryManagementController.java b/src/main/java/com/peanut/modules/master/controller/InventoryManagementController.java
index 2be88bd..d220582 100644
--- a/src/main/java/com/peanut/modules/master/controller/InventoryManagementController.java
+++ b/src/main/java/com/peanut/modules/master/controller/InventoryManagementController.java
@@ -46,9 +46,10 @@ public class InventoryManagementController {
 
     /**
      * 采购/售出；
-     * 采购 source：ls灵枢 zm众秒 other其他 publisher出版社，默认 other；跨商户采购自动两步；
+     * 采购 source：ls灵枢 zm众秒 other其他 publisher出版社，默认 other；跨商户采购自动两步；套书不支持入库；
      * 列表返回时 source 按 sys_dict_data(dict_label=inventory_source_type) 的 dict_type→dict_value 转换；
-     * 售出出库类型：outboundType 或 source，取自 sys_dict_data(dict_label=inventory_outbound_type) 的 dict_type
+     * 售出出库类型：outboundType 或 source，取自 sys_dict_data(dict_label=inventory_outbound_type) 的 dict_type；
+     * 套书售出拆成单本出库
      */
     @RequestMapping("/purchaseProduct")
     public R purchaseProduct(@RequestBody InvStockRecordDto dto) {
diff --git a/src/main/java/com/peanut/modules/master/service/InventoryManagementService.java b/src/main/java/com/peanut/modules/master/service/InventoryManagementService.java
index 46bef10..6de4f9a 100644
--- a/src/main/java/com/peanut/modules/master/service/InventoryManagementService.java
+++ b/src/main/java/com/peanut/modules/master/service/InventoryManagementService.java
@@ -20,19 +20,21 @@ public interface InventoryManagementService {
 
     /**
      * 图书订单售出：写入 inv_stock_record 售出流水。
-     * 天医币支付固定扣众秒库存（merchant_id=2）；其它支付按商品 payMerchant。
+     * 天医币支付固定扣众秒（merchant_id=2）；其它支付严格按商品 payMerchant（1→灵枢，0→众秒），不跨商户回退。
+     * 套书（shop_product_book 关联多本）拆成单本商品分别出库扣库存。
      */
     void saleByBookOrder(Integer productId, int quantity, BuyOrder buyOrder, ShopProduct product);
 
     /**
      * inv_stock_record 中是否存在该商品记录。
      * 天医币支付只查众秒（merchant_id=2）；其它支付查对应商户（无则任一商户有流水也算）。
+     * 套书查套内单本商品流水。
      */
     boolean hasInvStockRecord(Integer productId, BuyOrder buyOrder, ShopProduct product);
 
     /**
-     * 校验图书库存流水：无记录则通过；有记录则剩余库存须不少于购买数量。
-     * 天医币支付固定校验众秒库存。
+     * 校验图书库存流水：无记录则通过；有记录则目标商户剩余须不少于购买数量。
+     * 天医币支付固定校验众秒库存。套书校验套内每本单品库存。
      */
     boolean validateBookInvStock(Integer productId, int quantity, BuyOrder buyOrder, ShopProduct product);
 
@@ -43,12 +45,14 @@ public interface InventoryManagementService {
     List<Map<String, Object>> exportStockStatistics(Map<String, Object> params);
 
     /**
-     * 按订单回滚库存流水售出：回加采购批次 remain_quantity，售出记录 del_flag=1
+     * 按订单回滚出库：根据 order_id 查出全部售出流水，回加采购 remain，
+     * 并按出库商品回加对应 shop_product；返回已回加 shop 的商品ID集合，供业务侧避免重复回加。
      */
-    void rollbackSaleByOrderId(Integer orderId);
+    java.util.Set<Integer> rollbackSaleByOrderId(Integer orderId);
 
     /**
-     * Excel 批量售出：全部解析/匹配成功才入库，任一条失败则全部不入库
+     * Excel 批量售出：全部解析/匹配成功才入库，任一条失败则全部不入库。
+     * 套书行按 App 逻辑拆成单本出库。
      *
      * @param merchantId   商户ID
      * @param outboundType 出库类型 donation/taobao/app
diff --git a/src/main/java/com/peanut/modules/master/service/impl/InventoryManagementServiceImpl.java b/src/main/java/com/peanut/modules/master/service/impl/InventoryManagementServiceImpl.java
index 6cdd1ca..3700866 100644
--- a/src/main/java/com/peanut/modules/master/service/impl/InventoryManagementServiceImpl.java
+++ b/src/main/java/com/peanut/modules/master/service/impl/InventoryManagementServiceImpl.java
@@ -2,6 +2,7 @@ package com.peanut.modules.master.service.impl;
 
 import com.alipay.api.domain.Product;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.github.yulichang.wrapper.MPJLambdaWrapper;
@@ -228,6 +229,13 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
         }
         if (dto.getBiz_type() == InvStockRecord.BIZ_TYPE_SALE) {
             String outboundType = resolveOutboundType(dto.getOutboundType());
+            ShopProduct saleProduct = shopProductDao.selectById(dto.getProductId());
+            if (isSetBookProduct(saleProduct)) {
+                // 套书拆单出库：成本取各单本 FIFO 批次，不用请求里的套书 unitCost
+                saleSetBook(dto.getMerchantId(), dto.getQuantity(), saleProduct, outboundType,
+                        null, dto.getRemark(), null, null, null);
+                return;
+            }
             List<CostSplit> splits = deductPurchaseStockFifo(dto.getProductId(), dto.getMerchantId(), dto.getQuantity());
             for (CostSplit split : splits) {
                 BigDecimal saleUnitCost = (dto.getUnitCost() != null && dto.getUnitCost().compareTo(BigDecimal.ZERO) > 0)
@@ -244,6 +252,11 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
             throw new RuntimeException("单位成本必须大于0");
         }
 
+        ShopProduct product = shopProductDao.selectById(dto.getProductId());
+        if (isSetBookProduct(product)) {
+            throw new RuntimeException("套书不支持入库");
+        }
+
         // 采购：跨商户调拨 = 来源方按成本批次多条出库 + 本商户一条采购(成本取接口传值)
         // 灵枢→众秒：灵枢出库 outbound_type=zm；众秒→灵枢：众秒出库 outbound_type=ls
         if (isCrossMerchantTransfer(dto.getMerchantId(), dto.getSource())) {
@@ -261,47 +274,11 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
         }
 
         // 普通采购（source=other 等）
-        ShopProduct product = shopProductDao.selectById(dto.getProductId());
-        if (isSetBookProduct(product)) {
-            purchaseSetBook(dto, product);
-            return;
-        }
         insertRecord(dto.getProductId(), dto.getMerchantId(), normalizeSource(dto.getSource()),
                 InvStockRecord.BIZ_TYPE_PURCHASE, dto.getQuantity(), dto.getUnitCost(), dto.getRemark());
         adjustShopProductStock(dto.getProductId(), dto.getQuantity());
     }
 
-    /**
-     * 套装书采购：套书库存增加，套内每本单品按当前商户 FIFO 出库并扣减 shop_product 库存。
-     * 套内图书从 shop_product_book 按套书 product_id 关联查询。
-     */
-    private void purchaseSetBook(InvStockRecordDto dto, ShopProduct setProduct) {
-        List<Integer> bookIds = listBookIdsByProductId(setProduct.getProductId());
-        if (bookIds.isEmpty()) {
-            throw new RuntimeException("套书未在shop_product_book中关联图书");
-        }
-        int merchantId = dto.getMerchantId();
-        int quantity = dto.getQuantity();
-        validateSetBookComponentStock(bookIds, merchantId, quantity, setProduct.getProductId());
-
-        String saleSource = merchantIdToSource(merchantId);
-        String outboundRemark = "套书采购出库[" + setProduct.getProductName() + ",productId=" + setProduct.getProductId() + "]";
-        Long setPurchaseRecordId = insertRecord(dto.getProductId(), merchantId, normalizeSource(dto.getSource()),
-                null, InvStockRecord.BIZ_TYPE_PURCHASE, quantity, dto.getUnitCost(), dto.getRemark(),
-                null, null, null, null, null);
-        for (Integer bookId : bookIds) {
-            ShopProduct component = findComponentProductByBookId(bookId, setProduct.getProductId());
-            List<CostSplit> splits = deductPurchaseStockFifo(component.getProductId(), merchantId, quantity);
-            for (CostSplit split : splits) {
-                insertRecord(component.getProductId(), merchantId, saleSource, InvStockRecord.OUTBOUND_BOOKS,
-                        InvStockRecord.BIZ_TYPE_SALE, -split.quantity, split.unitCost, outboundRemark,
-                        null, null, null, split.purchaseRecordId, setPurchaseRecordId);
-            }
-            adjustShopProductStock(component.getProductId(), -quantity);
-        }
-        adjustShopProductStock(dto.getProductId(), quantity);
-    }
-
     /** 套书判定：shop_product_book 中关联图书数 > 1 */
     private boolean isSetBookProduct(ShopProduct product) {
         if (product == null || product.getProductId() == null) {
@@ -346,7 +323,7 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
             if (candidateId == null) {
                 continue;
             }
-            // 同一 book_id 可能关联套书与单品，优先取 shop_product_book 中仅关联 1 本书的单品 product_id
+            // 必须是 shop_product_book 中只绑定了 1 本书的单品 product_id
             Long bookCount = shopProductBookDao.selectCount(
                     new LambdaQueryWrapper<ShopProductBookEntity>()
                             .eq(ShopProductBookEntity::getProductId, candidateId)
@@ -355,9 +332,6 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
                 componentProductId = candidateId;
                 break;
             }
-            if (componentProductId == null) {
-                componentProductId = candidateId;
-            }
         }
         if (componentProductId == null) {
             return null;
@@ -431,7 +405,13 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
         if (quantity <= 0) {
             throw new RuntimeException("售出数量必须大于0");
         }
-        int merchantId = resolveBookOrderMerchantId(productId, buyOrder, product, quantity);
+        int merchantId = resolveBookOrderMerchantId(buyOrder, product);
+        if (isSetBookProduct(product)) {
+            saleSetBook(merchantId, quantity, product, InvStockRecord.OUTBOUND_APP,
+                    null, "套书订单售出[" + product.getProductName() + ",productId=" + productId + "]",
+                    buyOrder, null, null);
+            return;
+        }
 
         List<CostSplit> splits = deductPurchaseStockFifo(productId, merchantId, quantity);
         for (CostSplit split : splits) {
@@ -440,11 +420,45 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
         }
     }
 
+    /**
+     * 套书出库：按 shop_product_book 拆成单本商品，分别 FIFO 扣库存并写售出流水。
+     * App 订单、手工出库、批量出库共用。
+     */
+    private void saleSetBook(Integer merchantId, int quantity, ShopProduct setProduct, String outboundType,
+                             BigDecimal overrideUnitCost, String remark, BuyOrder buyOrder,
+                             Date createTime, String orderSn) {
+        Integer setProductId = setProduct.getProductId();
+        List<Integer> bookIds = listBookIdsByProductId(setProductId);
+        if (bookIds.isEmpty()) {
+            throw new RuntimeException("套书未在shop_product_book中关联图书");
+        }
+        validateSetBookComponentStock(bookIds, merchantId, quantity, setProductId);
+        String outboundRemark = (remark == null || remark.isBlank())
+                ? "套书出库[" + setProduct.getProductName() + ",productId=" + setProductId + "]"
+                : remark;
+        for (Integer bookId : bookIds) {
+            ShopProduct component = findComponentProductByBookId(bookId, setProductId);
+            List<CostSplit> splits = deductPurchaseStockFifo(component.getProductId(), merchantId, quantity);
+            for (CostSplit split : splits) {
+                BigDecimal saleUnitCost = (overrideUnitCost != null && overrideUnitCost.compareTo(BigDecimal.ZERO) > 0)
+                        ? overrideUnitCost : split.unitCost;
+                insertSaleRecord(component.getProductId(), merchantId, outboundType,
+                        -split.quantity, saleUnitCost, outboundRemark, buyOrder, createTime, orderSn,
+                        split.purchaseRecordId);
+            }
+            adjustShopProductStock(component.getProductId(), -quantity);
+        }
+    }
+
+    /**
+     * 按订单回滚出库：出库记录有哪些商品，就回加哪些商品的 remain 与 shop_product。
+     * @return 已回加 shop 的商品ID，供取消/退款跳过订单行重复回加
+     */
     @Override
     @Transactional(rollbackFor = Exception.class)
-    public void rollbackSaleByOrderId(Integer orderId) {
+    public Set<Integer> rollbackSaleByOrderId(Integer orderId) {
         if (orderId == null) {
-            return;
+            return Collections.emptySet();
         }
         List<InvStockRecord> saleRecords = invStockRecordDao.selectList(
                 new LambdaQueryWrapper<InvStockRecord>()
@@ -453,43 +467,69 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
                         .orderByDesc(InvStockRecord::getId)
         );
         if (saleRecords == null || saleRecords.isEmpty()) {
-            return;
+            return Collections.emptySet();
         }
+        Map<Integer, Integer> shopRestoreMap = new LinkedHashMap<>();
+        // 先全部回加 remain，失败则整单回滚，避免只软删出库流水、库存没加回
         for (InvStockRecord sale : saleRecords) {
             int restoreQty = sale.getQuantity() == null ? 0 : Math.abs(sale.getQuantity());
-            if (restoreQty > 0) {
-                if (sale.getPurchaseRecordId() != null) {
-                    restorePurchaseRemainById(sale.getPurchaseRecordId(), restoreQty);
-                } else {
-                    restorePurchaseRemain(sale.getProductId(), sale.getMerchantId(), sale.getUnitCost(), restoreQty);
-                }
+            if (restoreQty <= 0) {
+                continue;
             }
-            // @TableLogic：deleteById 将 del_flag 置为 1
+            if (sale.getPurchaseRecordId() != null) {
+                restorePurchaseRemainById(sale.getPurchaseRecordId(), restoreQty);
+            } else {
+                restorePurchaseRemain(sale.getProductId(), sale.getMerchantId(), sale.getUnitCost(), restoreQty);
+            }
+            Integer saleProductId = sale.getProductId();
+            if (saleProductId != null) {
+                shopRestoreMap.merge(saleProductId, restoreQty, Integer::sum);
+            }
+        }
+        for (InvStockRecord sale : saleRecords) {
             invStockRecordDao.deleteById(sale.getId());
         }
+        for (Map.Entry<Integer, Integer> entry : shopRestoreMap.entrySet()) {
+            adjustShopProductStock(entry.getKey(), entry.getValue());
+        }
+        return shopRestoreMap.keySet();
     }
 
-    /** 按采购流水ID精确回加 remain_quantity（不超过该批次原始 quantity） */
+    /** 按采购流水ID原子回加 remain_quantity；失败抛错，禁止静默跳过 */
     private void restorePurchaseRemainById(Long purchaseRecordId, int restoreQty) {
         if (purchaseRecordId == null || restoreQty <= 0) {
+            throw new RuntimeException("回滚库存参数无效，purchaseRecordId=" + purchaseRecordId + ", qty=" + restoreQty);
+        }
+        // 原子加回，避免 select+updateById 静默不生效
+        Integer rows = invStockRecordDao.update(null,
+                new LambdaUpdateWrapper<InvStockRecord>()
+                        .eq(InvStockRecord::getId, purchaseRecordId)
+                        .eq(InvStockRecord::getBizType, InvStockRecord.BIZ_TYPE_PURCHASE)
+                        .apply("IFNULL(remain_quantity,0) + {0} <= IFNULL(quantity,0)", restoreQty)
+                        .setSql("remain_quantity = IFNULL(remain_quantity,0) + " + restoreQty));
+        if (rows != null && rows > 0) {
             return;
         }
         InvStockRecord purchase = invStockRecordDao.selectById(purchaseRecordId);
         if (purchase == null || purchase.getBizType() == null
-                || purchase.getBizType() != InvStockRecord.BIZ_TYPE_PURCHASE) {
-            return;
+                || !Integer.valueOf(InvStockRecord.BIZ_TYPE_PURCHASE).equals(purchase.getBizType())) {
+            throw new RuntimeException("回滚库存失败，采购流水不存在或类型错误，purchaseRecordId=" + purchaseRecordId);
         }
         int originQty = purchase.getQuantity() == null ? 0 : purchase.getQuantity();
         int remainQty = purchase.getRemainQuantity() == null ? 0 : purchase.getRemainQuantity();
         int capacity = Math.max(0, originQty - remainQty);
         int add = Math.min(capacity, restoreQty);
-        if (add <= 0) {
-            return;
+        if (add > 0) {
+            Integer updated = invStockRecordDao.update(null,
+                    new LambdaUpdateWrapper<InvStockRecord>()
+                            .eq(InvStockRecord::getId, purchaseRecordId)
+                            .eq(InvStockRecord::getBizType, InvStockRecord.BIZ_TYPE_PURCHASE)
+                            .setSql("remain_quantity = IFNULL(remain_quantity,0) + " + add));
+            if (updated == null || updated <= 0) {
+                throw new RuntimeException("回滚库存失败，更新采购剩余未生效，purchaseRecordId=" + purchaseRecordId);
+            }
         }
-        purchase.setRemainQuantity(remainQty + add);
-        invStockRecordDao.updateById(purchase);
         if (add < restoreQty) {
-            // 容量不够时按旧逻辑兜底补足（兼容脏数据）
             restorePurchaseRemain(purchase.getProductId(), purchase.getMerchantId(),
                     purchase.getUnitCost(), restoreQty - add);
         }
@@ -499,9 +539,12 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
      * 按成本单价逆 FIFO 回加采购批次剩余库存（不超过该批次原始 quantity）
      */
     private void restorePurchaseRemain(Integer productId, Integer merchantId, BigDecimal unitCost, int restoreQty) {
-        if (productId == null || merchantId == null || restoreQty <= 0) {
+        if (restoreQty <= 0) {
             return;
         }
+        if (productId == null || merchantId == null) {
+            throw new RuntimeException("回滚库存失败，缺少商品或商户，productId=" + productId + ", merchantId=" + merchantId);
+        }
         LambdaQueryWrapper<InvStockRecord> wrapper = new LambdaQueryWrapper<InvStockRecord>()
                 .eq(InvStockRecord::getProductId, productId)
                 .eq(InvStockRecord::getMerchantId, merchantId)
@@ -523,8 +566,15 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
                 continue;
             }
             int add = Math.min(capacity, remaining);
-            purchase.setRemainQuantity(remainQty + add);
-            invStockRecordDao.updateById(purchase);
+            Integer updated = invStockRecordDao.update(null,
+                    new LambdaUpdateWrapper<InvStockRecord>()
+                            .eq(InvStockRecord::getId, purchase.getId())
+                            .eq(InvStockRecord::getBizType, InvStockRecord.BIZ_TYPE_PURCHASE)
+                            .apply("IFNULL(remain_quantity,0) + {0} <= IFNULL(quantity,0)", add)
+                            .setSql("remain_quantity = IFNULL(remain_quantity,0) + " + add));
+            if (updated == null || updated <= 0) {
+                continue;
+            }
             remaining -= add;
         }
         if (remaining > 0 && unitCost != null) {
@@ -541,6 +591,9 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
         if (productId == null) {
             return false;
         }
+        if (isSetBookProduct(product)) {
+            return hasSetBookComponentInvRecord(productId, buyOrder);
+        }
         if (isPeanutCoinPay(buyOrder)) {
             return hasInvOnMerchant(productId, InvStockRecord.MERCHANT_ZM);
         }
@@ -551,12 +604,50 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
         return count != null && count > 0;
     }
 
+    /** 套书：任一单本组件有流水即进入 inv 校验（天医币只认众秒） */
+    private boolean hasSetBookComponentInvRecord(Integer setProductId, BuyOrder buyOrder) {
+        List<Integer> bookIds = listBookIdsByProductId(setProductId);
+        if (bookIds.isEmpty()) {
+            return false;
+        }
+        boolean peanut = isPeanutCoinPay(buyOrder);
+        for (Integer bookId : bookIds) {
+            ShopProduct component = findComponentProductByBookId(bookId, setProductId);
+            if (component == null || component.getProductId() == null) {
+                continue;
+            }
+            if (peanut) {
+                if (hasInvOnMerchant(component.getProductId(), InvStockRecord.MERCHANT_ZM)) {
+                    return true;
+                }
+            } else {
+                Long count = invStockRecordDao.selectCount(
+                        new LambdaQueryWrapper<InvStockRecord>()
+                                .eq(InvStockRecord::getProductId, component.getProductId())
+                );
+                if (count != null && count > 0) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
     @Override
     public boolean validateBookInvStock(Integer productId, int quantity, BuyOrder buyOrder, ShopProduct product) {
         if (!hasInvStockRecord(productId, buyOrder, product)) {
             return true;
         }
-        int merchantId = resolveBookOrderMerchantId(productId, buyOrder, product, quantity);
+        int merchantId = resolveBookOrderMerchantId(buyOrder, product);
+        if (isSetBookProduct(product)) {
+            List<Integer> bookIds = listBookIdsByProductId(productId);
+            try {
+                validateSetBookComponentStock(bookIds, merchantId, quantity, productId);
+                return true;
+            } catch (RuntimeException ex) {
+                return false;
+            }
+        }
         int remain = sumRemainStockByMerchant(productId, merchantId);
         return remain > 0 && remain >= quantity;
     }
@@ -566,35 +657,16 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
         return buyOrder != null && Constants.PAYMENT_METHOD_VIRTUAL.equals(buyOrder.getPaymentMethod());
     }
 
-    private int resolveBookOrderMerchantId(Integer productId, BuyOrder buyOrder, ShopProduct product, int needQty) {
+    /**
+     * 天医币固定众秒；其它支付严格按 payMerchant 映射，不因目标商户剩余为 0 而改扣另一商户。
+     * payMerchant=1 → 灵枢；否则 → 众秒。
+     */
+    private int resolveBookOrderMerchantId(BuyOrder buyOrder, ShopProduct product) {
         if (isPeanutCoinPay(buyOrder)) {
             return InvStockRecord.MERCHANT_ZM;
         }
         int payMerchant = product == null || product.getPayMerchant() == null ? 0 : product.getPayMerchant();
-        return resolveInvMerchantId(productId, payMerchant, needQty);
-    }
-
-    /**
-     * 优先按 payMerchant 对应商户扣库存；该商户剩余不足时，回退到另一商户（兼容入库商户与 pay_merchant 不一致）。
-     */
-    private int resolveInvMerchantId(Integer productId, int payMerchant, int needQty) {
-        int preferred = payMerchant == 1 ? InvStockRecord.MERCHANT_LS : InvStockRecord.MERCHANT_ZM;
-        int other = preferred == InvStockRecord.MERCHANT_LS ? InvStockRecord.MERCHANT_ZM : InvStockRecord.MERCHANT_LS;
-        int preferredRemain = sumRemainStockByMerchant(productId, preferred);
-        if (preferredRemain >= needQty) {
-            return preferred;
-        }
-        int otherRemain = sumRemainStockByMerchant(productId, other);
-        if (otherRemain >= needQty) {
-            return other;
-        }
-        if (preferredRemain > 0 || hasInvOnMerchant(productId, preferred)) {
-            return preferred;
-        }
-        if (otherRemain > 0 || hasInvOnMerchant(productId, other)) {
-            return other;
-        }
-        return preferred;
+        return payMerchant == 1 ? InvStockRecord.MERCHANT_LS : InvStockRecord.MERCHANT_ZM;
     }
 
     private boolean hasInvOnMerchant(Integer productId, int merchantId) {
@@ -874,11 +946,39 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
         Map<Integer, Integer> needQtyMap = new LinkedHashMap<>();
         Map<Integer, String> productNameMap = new HashMap<>();
         for (BatchSaleRow row : rows) {
-            needQtyMap.merge(row.productId, row.quantity, Integer::sum);
-            if (row.matchedName != null && !row.matchedName.isBlank()) {
-                productNameMap.putIfAbsent(row.productId, row.matchedName);
+            ShopProduct matched = shopProductDao.selectById(row.productId);
+            if (isSetBookProduct(matched)) {
+                List<Integer> bookIds = listBookIdsByProductId(row.productId);
+                if (bookIds.isEmpty()) {
+                    errors.add("第" + row.excelRowNum + "行：套书未在shop_product_book中关联图书，productId=" + row.productId);
+                    continue;
+                }
+                for (Integer bookId : bookIds) {
+                    ShopProduct component = findComponentProductByBookId(bookId, row.productId);
+                    if (component == null || component.getProductId() == null) {
+                        String bookName = resolveBookName(bookId);
+                        String bookPart = bookName.isBlank()
+                                ? "书籍ID[" + bookId + "]"
+                                : "《" + bookName + "》(书籍ID:" + bookId + ")";
+                        errors.add("第" + row.excelRowNum + "行：套书拆分失败，" + bookPart + "无只绑1本的单品商品");
+                        continue;
+                    }
+                    needQtyMap.merge(component.getProductId(), row.quantity, Integer::sum);
+                    String cName = component.getProductName();
+                    if (cName != null && !cName.isBlank()) {
+                        productNameMap.putIfAbsent(component.getProductId(), cName);
+                    }
+                }
+            } else {
+                needQtyMap.merge(row.productId, row.quantity, Integer::sum);
+                if (row.matchedName != null && !row.matchedName.isBlank()) {
+                    productNameMap.putIfAbsent(row.productId, row.matchedName);
+                }
             }
         }
+        if (!errors.isEmpty()) {
+            throw new RuntimeException("全部未入库：" + String.join("；", errors));
+        }
         for (Map.Entry<Integer, Integer> entry : needQtyMap.entrySet()) {
             int remain = sumRemainStockByMerchant(entry.getKey(), merchantId);
             if (remain < entry.getValue()) {
@@ -892,8 +992,14 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
         }
 
         for (BatchSaleRow row : rows) {
-            List<CostSplit> splits = deductPurchaseStockFifo(row.productId, merchantId, row.quantity);
+            ShopProduct matched = shopProductDao.selectById(row.productId);
             String remark = "批量导入售出 orderSn=" + row.orderSn;
+            if (isSetBookProduct(matched)) {
+                saleSetBook(merchantId, row.quantity, matched, normalizedOutbound,
+                        null, remark, null, row.createTime, row.orderSn);
+                continue;
+            }
+            List<CostSplit> splits = deductPurchaseStockFifo(row.productId, merchantId, row.quantity);
             for (CostSplit split : splits) {
                 insertSaleRecord(row.productId, merchantId, normalizedOutbound,
                         -split.quantity, split.unitCost, remark, null, row.createTime, row.orderSn, split.purchaseRecordId);
@@ -1254,7 +1360,7 @@ public class InventoryManagementServiceImpl extends ServiceImpl<InvStockRecordDa
             if (component == null || component.getProductId() == null) {
                 continue;
             }
-            // findComponentProductByBookId 已优先只绑 1 本书；再兜底确认
+            // findComponentProductByBookId 已要求只绑 1 本书；再兜底确认
             if (listBookIdsByProductId(component.getProductId()).size() != 1) {
                 continue;
             }
diff --git a/src/main/java/com/peanut/modules/mq/Consumer/OrderCancelConsumer.java b/src/main/java/com/peanut/modules/mq/Consumer/OrderCancelConsumer.java
index c5c9a61..159e923 100644
--- a/src/main/java/com/peanut/modules/mq/Consumer/OrderCancelConsumer.java
+++ b/src/main/java/com/peanut/modules/mq/Consumer/OrderCancelConsumer.java
@@ -74,23 +74,27 @@ public class OrderCancelConsumer {
             couponService.rollbackCoupon(couponHistoryId);
         }
 
-        // 回滚商品库存与销量
+        // 先按出库流水回加 inv remain + 出库商品 shop_product
+        java.util.Set<Integer> invRestoredShopIds =
+                inventoryManagementService.rollbackSaleByOrderId(buyOrder.getOrderId());
+
+        // 回滚订单行 shop：出库流水已回加过的商品只回销量，不再加库存（单本避免双加；套书订单行仍会加回套书库存）
         LambdaQueryWrapper<BuyOrderProduct> wrapper = new LambdaQueryWrapper<>();
         wrapper.eq(BuyOrderProduct::getOrderId, buyOrder.getOrderId());
         List<BuyOrderProduct> buyOrderProducts = buyOrderProductDao.selectList(wrapper);
         for (BuyOrderProduct b : buyOrderProducts) {
             ShopProduct shopProduct = shopProductDao.selectById(b.getProductId());
             if (shopProduct != null) {
-                int stock = shopProduct.getProductStock() == null ? 0 : shopProduct.getProductStock();
                 int sales = shopProduct.getSumSales() == null ? 0 : shopProduct.getSumSales();
                 int qty = b.getQuantity();
-                shopProduct.setProductStock(stock + qty);
+                if (invRestoredShopIds == null || !invRestoredShopIds.contains(b.getProductId())) {
+                    int stock = shopProduct.getProductStock() == null ? 0 : shopProduct.getProductStock();
+                    shopProduct.setProductStock(stock + qty);
+                }
                 shopProduct.setSumSales(Math.max(0, sales - qty));
                 shopProductDao.updateById(shopProduct);
             }
         }
-        // 回滚 inv 售出流水：回加采购 remain_quantity，售出记录 del_flag=1
-        inventoryManagementService.rollbackSaleByOrderId(buyOrder.getOrderId());
 
         buyOrderService.updateById(buyOrder);
         //buyOrderService.removeById(buyOrder);