diff --git a/app/Http/Controllers/Goods/GoodsCombinationController.php b/app/Http/Controllers/Goods/GoodsCombinationController.php
index 7133c6f..7cf441a 100644
--- a/app/Http/Controllers/Goods/GoodsCombinationController.php
+++ b/app/Http/Controllers/Goods/GoodsCombinationController.php
@@ -113,6 +113,12 @@ class GoodsCombinationController extends Controller
 
             return response($this->res, $this->res['httpCode']);
         }
+        $externalSkuId = $request->input('external_sku_id') ??
+            GeneratorUtils::generateCombinationGoodNumber($request->combination_goods);
+        $hasCodeSku = GoodsSku::query()->where("external_sku_id",$externalSkuId)->first();
+        if(!empty($hasCodeSku)){
+            throw new \Exception("该组合商品编码已存在");
+        }
         DB::beginTransaction();
         try {
             $combinationGoods = $request->input('combination_goods');
@@ -142,8 +148,7 @@ class GoodsCombinationController extends Controller
                 $sku->is_combination = 1;
             }
 
-            $externalSkuId = $request->input('external_sku_id') ??
-                GeneratorUtils::generateCombinationGoodNumber($request->combination_goods);
+
             $sku->status = $status;
             $sku->title = $request->input('title');
             $sku->name = $request->input('title');