diff --git a/backend/src/main/java/io/metersphere/service/UserService.java b/backend/src/main/java/io/metersphere/service/UserService.java
index 6a20ed42c3..ebb1c99ead 100644
--- a/backend/src/main/java/io/metersphere/service/UserService.java
+++ b/backend/src/main/java/io/metersphere/service/UserService.java
@@ -318,6 +318,17 @@ public class UserService {
     }
 
     public void updateUser(User user) {
+        // todo 提取重复代码
+        if (StringUtils.isNotBlank(user.getEmail())) {
+            UserExample example = new UserExample();
+            UserExample.Criteria criteria = example.createCriteria();
+            criteria.andEmailEqualTo(user.getEmail());
+            criteria.andIdNotEqualTo(user.getId());
+            if (userMapper.countByExample(example) > 0) {
+                MSException.throwException(Translator.get("user_email_already_exists"));
+            }
+        }
+
         user.setUpdateTime(System.currentTimeMillis());
         userMapper.updateByPrimaryKeySelective(user);
         // 禁用用户之后，剔除在线用户
diff --git a/frontend/src/business/components/track/plan/view/comonents/TestCaseRelevance.vue b/frontend/src/business/components/track/plan/view/comonents/TestCaseRelevance.vue
index 5d979498d4..9f7b8bfa66 100644
--- a/frontend/src/business/components/track/plan/view/comonents/TestCaseRelevance.vue
+++ b/frontend/src/business/components/track/plan/view/comonents/TestCaseRelevance.vue
@@ -293,6 +293,8 @@
               this.projectId = data[0].id;
               this.projectName = data[0].name;
               this.search();
+              // 获取项目时刷新该项目模块
+              this.getProjectNode(this.projectId)
             }
           })
         }