diff --git a/src/main/java/com/peanut/modules/book/controller/UserEbookBuyController.java b/src/main/java/com/peanut/modules/book/controller/UserEbookBuyController.java
index 491d0add..c3b67c89 100644
--- a/src/main/java/com/peanut/modules/book/controller/UserEbookBuyController.java
+++ b/src/main/java/com/peanut/modules/book/controller/UserEbookBuyController.java
@@ -121,6 +121,7 @@ public class UserEbookBuyController {
         wrapper.selectAll(BookEntity.class);
         wrapper.leftJoin(UserEbookBuyEntity.class,UserEbookBuyEntity::getBookId,BookEntity::getId);
         wrapper.eq(UserEbookBuyEntity::getUserId,userId);
+        wrapper.groupBy(UserEbookBuyEntity::getBookId);
         Page<BookEntity> bookEntityPage = bookDao.selectJoinPage(new Page<BookEntity>(page, limit), BookEntity.class, wrapper);
         return R.ok().put("page",bookEntityPage);
     }