diff --git a/src/main/java/com/peanut/modules/common/controller/BuyOrderController.java b/src/main/java/com/peanut/modules/common/controller/BuyOrderController.java
new file mode 100644
index 00000000..d6c69ea2
--- /dev/null
+++ b/src/main/java/com/peanut/modules/common/controller/BuyOrderController.java
@@ -0,0 +1,28 @@
+package com.peanut.modules.common.controller;
+
+import com.peanut.common.utils.R;
+import com.peanut.modules.common.service.BuyOrderService;
+import com.peanut.modules.common.to.PrepareOrderDto;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Map;
+
+@Slf4j
+@RestController("commonBuyOrder")
+@RequestMapping("common/buyOrder")
+public class BuyOrderController {
+
+    @Autowired
+    private BuyOrderService buyOrderService;
+
+    @RequestMapping("/initPrepareOrder")
+    public R initPrepareOrder(@RequestBody PrepareOrderDto prepareOrderDto){
+        Map<String, Object> stringObjectMap = buyOrderService.initPrepareOrder(prepareOrderDto);
+        return R.ok().put("data",stringObjectMap);
+    }
+
+}
diff --git a/src/main/java/com/peanut/modules/common/service/BuyOrderService.java b/src/main/java/com/peanut/modules/common/service/BuyOrderService.java
new file mode 100644
index 00000000..67fe9867
--- /dev/null
+++ b/src/main/java/com/peanut/modules/common/service/BuyOrderService.java
@@ -0,0 +1,12 @@
+package com.peanut.modules.common.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.peanut.modules.common.entity.BuyOrder;
+import com.peanut.modules.common.to.PrepareOrderDto;
+
+import java.util.Map;
+
+public interface BuyOrderService extends IService<BuyOrder> {
+
+    Map<String,Object> initPrepareOrder(PrepareOrderDto prepareOrderDto);
+}
diff --git a/src/main/java/com/peanut/modules/common/service/impl/BuyOrderServiceImpl.java b/src/main/java/com/peanut/modules/common/service/impl/BuyOrderServiceImpl.java
new file mode 100644
index 00000000..96406a7c
--- /dev/null
+++ b/src/main/java/com/peanut/modules/common/service/impl/BuyOrderServiceImpl.java
@@ -0,0 +1,49 @@
+package com.peanut.modules.common.service.impl;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.peanut.modules.common.dao.BuyOrderDao;
+import com.peanut.modules.common.dao.MyUserDao;
+import com.peanut.modules.common.dao.ShopProductDao;
+import com.peanut.modules.common.entity.BuyOrder;
+import com.peanut.modules.common.entity.MyUserEntity;
+import com.peanut.modules.common.entity.ShopProduct;
+import com.peanut.modules.common.service.BuyOrderService;
+import com.peanut.modules.common.to.PrepareOrderDto;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Slf4j
+@Service("commonBuyOrderService")
+public class BuyOrderServiceImpl extends ServiceImpl<BuyOrderDao, BuyOrder> implements BuyOrderService {
+
+    @Autowired
+    private MyUserDao userDao;
+    @Autowired
+    private BuyOrderDao buyOrderDao;
+    @Autowired
+    private ShopProductDao shopProductDao;
+
+    @Override
+    public Map<String, Object> initPrepareOrder(PrepareOrderDto prepareOrderDto) {
+        Map<String, Object> flag = new HashMap<>();
+        MyUserEntity userEntity = userDao.selectById(prepareOrderDto.getUid());
+        flag.put("user",userEntity);
+
+        boolean allFive = true;
+        for (Map<String,Integer> m:prepareOrderDto.getProductList()){
+            ShopProduct shopProduct = shopProductDao.selectById(m.get("productId"));
+            if(!shopProduct.getGoodsType().equals("05")){
+                allFive = false;
+                break;
+            }
+        }
+
+        flag.put("is_course",allFive);
+
+        return flag;
+    }
+}
diff --git a/src/main/java/com/peanut/modules/common/to/PrepareOrderDto.java b/src/main/java/com/peanut/modules/common/to/PrepareOrderDto.java
new file mode 100644
index 00000000..43c988e8
--- /dev/null
+++ b/src/main/java/com/peanut/modules/common/to/PrepareOrderDto.java
@@ -0,0 +1,15 @@
+package com.peanut.modules.common.to;
+
+import lombok.Data;
+
+import java.util.List;
+import java.util.Map;
+
+@Data
+public class PrepareOrderDto {
+
+    private Integer uid;
+
+    private List<Map<String,Integer>> productList;
+
+}