diff --git a/campus-modular/src/main/java/com/oddfar/campus/business/controller/IUserController.java b/campus-modular/src/main/java/com/oddfar/campus/business/controller/IUserController.java
index 125141b..4dc3690 100644
--- a/campus-modular/src/main/java/com/oddfar/campus/business/controller/IUserController.java
+++ b/campus-modular/src/main/java/com/oddfar/campus/business/controller/IUserController.java
@@ -15,8 +15,6 @@
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.web.bind.annotation.*;
 
-import java.util.Arrays;
-
 /**
  * I茅台用户Controller
  *
@@ -151,6 +149,6 @@ public R edit(@RequestBody IUser iUser) {
     @PreAuthorize("@ss.resourceAuth()")
     @DeleteMapping(value = "/{mobiles}", name = "删除I茅台用户")
     public R remove(@PathVariable Long[] mobiles) {
-        return R.ok(iUserMapper.deleteBatchIds(Arrays.asList(mobiles)));
+        return R.ok(iUserMapper.deleteIUser(mobiles));
     }
 }
diff --git a/campus-modular/src/main/java/com/oddfar/campus/business/entity/IUser.java b/campus-modular/src/main/java/com/oddfar/campus/business/entity/IUser.java
index 142174f..c83969c 100644
--- a/campus-modular/src/main/java/com/oddfar/campus/business/entity/IUser.java
+++ b/campus-modular/src/main/java/com/oddfar/campus/business/entity/IUser.java
@@ -136,7 +136,7 @@ public IUser(Long mobile, String deviceId, JSONObject jsonObject) {
         this.mobile = mobile;
         this.token = data.getString("token");
         this.cookie = data.getString("cookie");
-        this.deviceId = deviceId.toUpperCase();
+        this.deviceId = deviceId.toLowerCase();
         this.jsonResult = StringUtils.substring(jsonObject.toJSONString(), 0, 2000);
 
         if (StringUtils.isEmpty(this.remark)) {
diff --git a/campus-modular/src/main/java/com/oddfar/campus/business/mapper/IUserMapper.java b/campus-modular/src/main/java/com/oddfar/campus/business/mapper/IUserMapper.java
index 1a5d71d..889abbb 100644
--- a/campus-modular/src/main/java/com/oddfar/campus/business/mapper/IUserMapper.java
+++ b/campus-modular/src/main/java/com/oddfar/campus/business/mapper/IUserMapper.java
@@ -70,4 +70,5 @@ default List<IUser> selectReservationUserByMinute(int minute) {
     @Select("UPDATE i_user SET `minute` = (SELECT FLOOR(RAND() * 59 + 1)) WHERE random_minute = \"0\"")
     void updateUserMinuteBatch();
 
+    int deleteIUser(Long[] iUserId);
 }
diff --git a/campus-modular/src/main/java/com/oddfar/campus/business/service/IUserService.java b/campus-modular/src/main/java/com/oddfar/campus/business/service/IUserService.java
index ef2a880..76165c3 100644
--- a/campus-modular/src/main/java/com/oddfar/campus/business/service/IUserService.java
+++ b/campus-modular/src/main/java/com/oddfar/campus/business/service/IUserService.java
@@ -62,5 +62,5 @@ public interface IUserService {
      * @param iUserId id
      * @return
      */
-    int deleteIUser(Long iUserId);
+    int deleteIUser(Long[] iUserId);
 }
diff --git a/campus-modular/src/main/java/com/oddfar/campus/business/service/impl/IUserServiceImpl.java b/campus-modular/src/main/java/com/oddfar/campus/business/service/impl/IUserServiceImpl.java
index cacf414..0e8897f 100644
--- a/campus-modular/src/main/java/com/oddfar/campus/business/service/impl/IUserServiceImpl.java
+++ b/campus-modular/src/main/java/com/oddfar/campus/business/service/impl/IUserServiceImpl.java
@@ -34,7 +34,7 @@ public PageResult<IUser> page(IUser iUser) {
     public int insertIUser(Long mobile, String deviceId, JSONObject jsonObject) {
         JSONObject data = jsonObject.getJSONObject("data");
         if (StringUtils.isEmpty(deviceId)) {
-            deviceId = UUID.randomUUID().toString().toUpperCase();
+            deviceId = UUID.randomUUID().toString().toLowerCase();
         }
         IUser user = iUserMapper.selectById(mobile);
 
@@ -73,7 +73,7 @@ public int insertIUser(IUser iUser) {
         }
 
         if (StringUtils.isEmpty(iUser.getDeviceId())) {
-            iUser.setDeviceId(UUID.randomUUID().toString().toUpperCase());
+            iUser.setDeviceId(UUID.randomUUID().toString().toLowerCase());
         }
         iUser.setCreateUser(SecurityUtils.getUserId());
         return iUserMapper.insert(iUser);
@@ -94,7 +94,7 @@ public void updateUserMinuteBatch() {
     }
 
     @Override
-    public int deleteIUser(Long iUserId) {
-        return iUserMapper.deleteById(iUserId);
+    public int deleteIUser(Long[] iUserId) {
+        return iUserMapper.deleteIUser(iUserId);
     }
 }
diff --git a/campus-modular/src/main/resources/mapper/IUserMapper.xml b/campus-modular/src/main/resources/mapper/IUserMapper.xml
index 348ec72..0bcfe64 100644
--- a/campus-modular/src/main/resources/mapper/IUserMapper.xml
+++ b/campus-modular/src/main/resources/mapper/IUserMapper.xml
@@ -3,4 +3,10 @@
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.oddfar.campus.business.mapper.IUserMapper">
 
+    <delete id="deleteIUser" parameterType="Long">
+        delete from i_user where mobile in
+        <foreach item="id" collection="array" open="(" separator="," close=")">
+            #{id}
+        </foreach>
+    </delete>
 </mapper>