diff --git a/laws-modules/src/main/java/com/jero/modules/sys/controller/LawsWorkingGroupUserController.java b/laws-modules/src/main/java/com/jero/modules/sys/controller/LawsWorkingGroupUserController.java
index 749d202a..357884ae 100644
--- a/laws-modules/src/main/java/com/jero/modules/sys/controller/LawsWorkingGroupUserController.java
+++ b/laws-modules/src/main/java/com/jero/modules/sys/controller/LawsWorkingGroupUserController.java
@@ -84,6 +84,9 @@ public class LawsWorkingGroupUserController extends JeroController<LawsWorkingGr
 	  * 赋值姓名、工号、角色、岗位
 	  */
 	 public void userAssignment(List<LawsWorkingGroupUser> list){
+	 	if (list == null || list.size() == 0){
+	 		return;
+		}
 		 List<String> collect = list.stream().map(LawsWorkingGroupUser::getUserId).distinct().collect(Collectors.toList());
 		 LambdaQueryWrapper<SysUser> wrapper = new LambdaQueryWrapper<>();
 		 wrapper.in(SysUser::getId, collect);