diff --git a/src/main/java/com/msdw/tms/controller/UserInfoController.java b/src/main/java/com/msdw/tms/controller/UserInfoController.java
index 3e1578d..1ea72ce 100644
--- a/src/main/java/com/msdw/tms/controller/UserInfoController.java
+++ b/src/main/java/com/msdw/tms/controller/UserInfoController.java
@@ -182,6 +182,12 @@ public class UserInfoController implements UserInfoControllerApi {
         UserInfoEntity userInfo = vo.getUserInfoEntity();
         Integer userId = userInfo.getUserId();
         String password = userInfo.getPassword();
+
+        //验证账号是否存在
+        int num = userInfoService.queryAccountExist(userInfo.getAccount());
+        if (num >= 1){
+            return R.error(500,"更新失败，账号不能重复");
+        }
         String userPassword = userInfoService.queryPasword(userId);
         if (userPassword.equals(password)==true){
             return R.error(400,"false,the password is the same!!!");
diff --git a/src/main/java/com/msdw/tms/dao/UserInfoDao.java b/src/main/java/com/msdw/tms/dao/UserInfoDao.java
index b1a3cfc..ccdb1fc 100644
--- a/src/main/java/com/msdw/tms/dao/UserInfoDao.java
+++ b/src/main/java/com/msdw/tms/dao/UserInfoDao.java
@@ -66,4 +66,6 @@ public interface UserInfoDao extends BaseMapper<UserInfoEntity> {
     List<String> queryStudentName(Integer userId);
 
     Integer getUserId(String token);
+
+    Integer queryAccountExist(String account);
 }
diff --git a/src/main/java/com/msdw/tms/service/UserInfoService.java b/src/main/java/com/msdw/tms/service/UserInfoService.java
index 2948e42..59b44e0 100644
--- a/src/main/java/com/msdw/tms/service/UserInfoService.java
+++ b/src/main/java/com/msdw/tms/service/UserInfoService.java
@@ -50,4 +50,5 @@ public interface UserInfoService extends IService<UserInfoEntity> {
 
     R getUserId(String token);
 
+    Integer queryAccountExist(String account);
 }
diff --git a/src/main/java/com/msdw/tms/service/impl/UserInfoServiceImpl.java b/src/main/java/com/msdw/tms/service/impl/UserInfoServiceImpl.java
index a852738..17459cc 100644
--- a/src/main/java/com/msdw/tms/service/impl/UserInfoServiceImpl.java
+++ b/src/main/java/com/msdw/tms/service/impl/UserInfoServiceImpl.java
@@ -227,4 +227,12 @@ public class UserInfoServiceImpl extends ServiceImpl<UserInfoDao, UserInfoEntity
         Integer userId = userInfoDao.getUserId(token);
         return R.ok().put("userId", userId);
     }
+
+    @Override
+    public Integer queryAccountExist(String account) {
+        Integer num = userInfoDao.queryAccountExist(account);
+        return num;
+
+
+    }
 }
diff --git a/src/main/resources/mapper/tms/UserInfoDao.xml b/src/main/resources/mapper/tms/UserInfoDao.xml
index 5ec1bd1..747cb47 100644
--- a/src/main/resources/mapper/tms/UserInfoDao.xml
+++ b/src/main/resources/mapper/tms/UserInfoDao.xml
@@ -291,4 +291,8 @@
         SELECT userId FROM hr_user_info where token = #{token} and isdel = 0
     </select>
 
+    <select id="queryAccountExist" resultType="java.lang.Integer">
+        SELECT count(*) FROM hr_user_info where account = 223  and isdel = 0
+    </select>
+
 </mapper>
\ No newline at end of file