diff --git a/ruoyi-modules-api/ruoyi-system-api/src/main/java/org/ruoyi/system/domain/SysDept.java b/ruoyi-modules-api/ruoyi-system-api/src/main/java/org/ruoyi/system/domain/SysDept.java
index 5be5f44b..ea00915d 100644
--- a/ruoyi-modules-api/ruoyi-system-api/src/main/java/org/ruoyi/system/domain/SysDept.java
+++ b/ruoyi-modules-api/ruoyi-system-api/src/main/java/org/ruoyi/system/domain/SysDept.java
@@ -47,7 +47,7 @@ public class SysDept extends TenantEntity {
     /**
      * 负责人
      */
-    private Long leader;
+    private String leader;
 
     /**
      * 联系电话
diff --git a/ruoyi-modules-api/ruoyi-system-api/src/main/java/org/ruoyi/system/service/impl/SysTenantServiceImpl.java b/ruoyi-modules-api/ruoyi-system-api/src/main/java/org/ruoyi/system/service/impl/SysTenantServiceImpl.java
index 46091695..11f60bed 100644
--- a/ruoyi-modules-api/ruoyi-system-api/src/main/java/org/ruoyi/system/service/impl/SysTenantServiceImpl.java
+++ b/ruoyi-modules-api/ruoyi-system-api/src/main/java/org/ruoyi/system/service/impl/SysTenantServiceImpl.java
@@ -160,7 +160,7 @@ public class SysTenantServiceImpl implements ISysTenantService {
         userMapper.insert(user);
         //新增系统用户后，默认当前用户为部门的负责人
         SysDept sd = new SysDept();
-        sd.setLeader(user.getUserId());
+        sd.setLeader(String.valueOf(user.getUserId()));
         sd.setDeptId(deptId);
         deptMapper.updateById(sd);
 
diff --git a/ruoyi-modules/ruoyi-system/src/main/java/org/ruoyi/system/controller/system/SysUserController.java b/ruoyi-modules/ruoyi-system/src/main/java/org/ruoyi/system/controller/system/SysUserController.java
index 04e5c0d8..ddc79604 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/org/ruoyi/system/controller/system/SysUserController.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/org/ruoyi/system/controller/system/SysUserController.java
@@ -322,4 +322,19 @@ public class SysUserController extends BaseController {
         return R.ok(trees);
     }
 
+
+    /**
+     * 根据部门ID统计用户数量 /system/user/list/dept/
+     *
+     * @param deptId 部门ID
+     */ 
+    @SaCheckPermission("system:user:list:dept")
+    @GetMapping("/list/dept/{deptId}")
+    public R<List<SysUserVo>> countUsersByDept(@PathVariable Long deptId) {
+        SysUserBo user = new SysUserBo();
+        user.setDeptId(deptId);
+        List<SysUserVo> userList = userService.selectUserList(user);
+        return R.ok(userList);
+    }
+
 }