diff --git a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/user/UserController.java b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/user/UserController.java
index f126c3b7..a86ed536 100644
--- a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/user/UserController.java
+++ b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/controller/admin/user/UserController.java
@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.system.controller.admin.user;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.StrUtil;
 import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
 import cn.iocoder.yudao.framework.common.pojo.CommonResult;
 import cn.iocoder.yudao.framework.common.pojo.PageParam;
@@ -22,6 +23,7 @@ import io.swagger.v3.oas.annotations.Parameters;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import org.springframework.context.annotation.Bean;
 import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.util.StringUtils;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
@@ -124,7 +126,7 @@ public class UserController {
     @PreAuthorize("@ss.hasPermission('system:user:query')")
     public CommonResult<UserRespVO> getUser(@RequestParam("id") Long id) {
         AdminUserDO user = userService.getUser(id);
-        user.setAvatar(user.getAvatar() + "?timestamp=" + System.currentTimeMillis());
+        user.setAvatar(StrUtil.isEmpty(user.getAvatar()) ? "" : user.getAvatar() + "?timestamp=" + System.currentTimeMillis());
         // 拼接数据
         DeptDO dept = deptService.getDept(user.getDeptId());