diff --git a/server/like-admin/src/main/java/com/mdd/admin/service/system/impl/SystemAuthAdminServiceImpl.java b/server/like-admin/src/main/java/com/mdd/admin/service/system/impl/SystemAuthAdminServiceImpl.java
index 2685765e..da1d48c5 100644
--- a/server/like-admin/src/main/java/com/mdd/admin/service/system/impl/SystemAuthAdminServiceImpl.java
+++ b/server/like-admin/src/main/java/com/mdd/admin/service/system/impl/SystemAuthAdminServiceImpl.java
@@ -237,7 +237,7 @@ public class SystemAuthAdminServiceImpl implements ISystemAuthAdminService {
         String pwd    = ToolsUtil.makeMd5(systemAuthAdminParam.getPassword().trim() + salt);
         String avatar = StringUtil.isNotEmpty(systemAuthAdminParam.getAvatar()) ?
                 UrlUtil.toRelativeUrl(systemAuthAdminParam.getAvatar()) :
-                "/api/static/backend_avatar.jpg";
+                "/api/static/backend_avatar.png";
 
         SystemAuthAdmin model = new SystemAuthAdmin();
         model.setDeptId(systemAuthAdminParam.getDeptId());