diff --git a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysUserController.java b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysUserController.java
index 93edc9c5..0a8bd450 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysUserController.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysUserController.java
@@ -349,7 +349,8 @@ public class SysUserController extends BaseController
     @GetMapping("/selectDeptTree/{deptId}")
     public String selectDeptTree(@PathVariable("deptId") Long deptId, ModelMap mmap)
     {
-        mmap.put("dept", deptService.selectDeptById(deptId));
+        SysDept value = deptService.selectDeptById(deptId);
+        mmap.put("dept", value==null?new SysDept():value);
         return prefix + "/deptTree";
     }
 }
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