diff --git a/.workbuddy/memory/MEMORY.md b/.workbuddy/memory/MEMORY.md
new file mode 100644
index 0000000..e69de29
diff --git a/src/main/java/com/gxwebsoft/shop/controller/ShopDealerUserController.java b/src/main/java/com/gxwebsoft/shop/controller/ShopDealerUserController.java
index 1000128..d95b7dc 100644
--- a/src/main/java/com/gxwebsoft/shop/controller/ShopDealerUserController.java
+++ b/src/main/java/com/gxwebsoft/shop/controller/ShopDealerUserController.java
@@ -68,9 +68,15 @@ public class ShopDealerUserController extends BaseController {
         if (loginUser != null) {
          shopDealerUser.setUserId(loginUser.getUserId());
         }
-        // 排重
-        if (shopDealerUserService.count(new LambdaQueryWrapper<ShopDealerUser>().eq(ShopDealerUser::getMobile, shopDealerUser.getMobile())) > 0) {
-            return fail("添加失败，手机号码已存在！");
+        // 查询是否已存在该手机号的记录
+        ShopDealerUser existUser = shopDealerUserService.getOne(
+            new LambdaQueryWrapper<ShopDealerUser>().eq(ShopDealerUser::getMobile, shopDealerUser.getMobile())
+        );
+        if (existUser != null) {
+            // 手机号已存在，更新其 userId 为当前用户
+            existUser.setUserId(shopDealerUser.getUserId());
+            shopDealerUserService.updateById(existUser);
+            return success("更新成功", existUser);
         }
         if (shopDealerUserService.save(shopDealerUser)) {
             return success("添加成功", shopDealerUser);