diff --git a/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/database/rds/service/props/impl/FragmentsBackpackServiceImpl.java b/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/database/rds/service/props/impl/FragmentsBackpackServiceImpl.java
index 718090a1..62d94e29 100644
--- a/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/database/rds/service/props/impl/FragmentsBackpackServiceImpl.java
+++ b/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/database/rds/service/props/impl/FragmentsBackpackServiceImpl.java
@@ -63,7 +63,8 @@ public class FragmentsBackpackServiceImpl extends
         .setSql("quantity=quantity-" + quantity)
         .in(FragmentsBackpack::getFragmentsId, fragmentsIds)
         .eq(FragmentsBackpack::getUserId, userId)
-        .last(PageConstant.formatLimit(fragmentsIds.size()))
+        .ge(FragmentsBackpack::getQuantity, quantity)
+        .last(PageConstant.formatLimit(fragmentsIds.size()) + " FOR UPDATE")
         .execute();
   }