diff --git a/src/main/java/com/gxwebsoft/app/controller/AppUserController.java b/src/main/java/com/gxwebsoft/app/controller/AppUserController.java
index 4124862..695369c 100644
--- a/src/main/java/com/gxwebsoft/app/controller/AppUserController.java
+++ b/src/main/java/com/gxwebsoft/app/controller/AppUserController.java
@@ -67,13 +67,24 @@ public class AppUserController extends BaseController {
         return fail("添加失败");
     }
 
-    @Operation(summary = "邀请用户成为应用成员")
+    @Operation(summary = "邀请用户成为应用成员（支持用户ID或手机号）")
     @PostMapping("/invite")
     public ApiResult<?> invite(@RequestBody AppUser appUser) {
         User loginUser = getLoginUser();
         if (loginUser == null) {
             return fail("请先登录");
         }
+        // 支持手机号邀请：若 userId 为空但传了 phone，则先按手机号查出用户
+        if (appUser.getUserId() == null && appUser.getPhone() != null && !appUser.getPhone().isEmpty()) {
+            User targetUser = appUserService.findUserByPhone(appUser.getPhone());
+            if (targetUser == null) {
+                return fail("手机号未注册，请确认后再试");
+            }
+            appUser.setUserId(targetUser.getUserId());
+        }
+        if (appUser.getUserId() == null) {
+            return fail("请输入用户ID或手机号");
+        }
         try {
             AppUser result = appUserService.inviteUser(
                     appUser.getWebsiteId(),
diff --git a/src/main/java/com/gxwebsoft/app/service/AppUserService.java b/src/main/java/com/gxwebsoft/app/service/AppUserService.java
index 6888fc2..0aa0793 100644
--- a/src/main/java/com/gxwebsoft/app/service/AppUserService.java
+++ b/src/main/java/com/gxwebsoft/app/service/AppUserService.java
@@ -57,4 +57,12 @@ public interface AppUserService extends IService<AppUser> {
      */
     boolean isMember(Long websiteId, Integer userId);
 
+    /**
+     * 根据手机号查找系统用户（用于手机号邀请）
+     *
+     * @param phone 手机号
+     * @return 系统用户，不存在返回 null
+     */
+    com.gxwebsoft.common.system.entity.User findUserByPhone(String phone);
+
 }
diff --git a/src/main/java/com/gxwebsoft/app/service/impl/AppUserServiceImpl.java b/src/main/java/com/gxwebsoft/app/service/impl/AppUserServiceImpl.java
index 0732a7d..9d38689 100644
--- a/src/main/java/com/gxwebsoft/app/service/impl/AppUserServiceImpl.java
+++ b/src/main/java/com/gxwebsoft/app/service/impl/AppUserServiceImpl.java
@@ -104,4 +104,9 @@ public class AppUserServiceImpl extends ServiceImpl<AppUserMapper, AppUser> impl
         return count > 0;
     }
 
+    @Override
+    public User findUserByPhone(String phone) {
+        return userService.getByPhone(phone);
+    }
+
 }