diff --git a/src/main/java/com/gxwebsoft/common/system/controller/MainController.java b/src/main/java/com/gxwebsoft/common/system/controller/MainController.java
index 847e39a..eaebab6 100644
--- a/src/main/java/com/gxwebsoft/common/system/controller/MainController.java
+++ b/src/main/java/com/gxwebsoft/common/system/controller/MainController.java
@@ -869,7 +869,9 @@ public class MainController extends BaseController {
   public ApiResult<LoginResult> superAdminRegister(@RequestBody User user) {
     // 验证签名
     String tenantName = user.getCompanyName();     // 应用名称
-    String phone = user.getPhone();                // 手机号码
+    // 自动使用当前登录用户的手机号
+    User loginUser = getLoginUser();
+    String phone = loginUser != null ? loginUser.getPhone() : user.getPhone();
     String password = user.getPassword();          // 密码
     String code = user.getCode();                  // 短信验证码
     String email = user.getEmail();                // 邮箱