diff --git a/coolstore-partner-service/src/main/java/com/cool/store/service/impl/LinePayServiceImpl.java b/coolstore-partner-service/src/main/java/com/cool/store/service/impl/LinePayServiceImpl.java
index ce2d94a4a..ece8505c8 100644
--- a/coolstore-partner-service/src/main/java/com/cool/store/service/impl/LinePayServiceImpl.java
+++ b/coolstore-partner-service/src/main/java/com/cool/store/service/impl/LinePayServiceImpl.java
@@ -121,7 +121,7 @@ public class LinePayServiceImpl implements LinePayService {
         } else {
             fillLinePay(Boolean.FALSE, linePayDO, request, partnerUser);
             linePayDAO.updateLinePay(linePayDO);
-            return null;
+            return linePayDO.getId();
         }
     }