diff --git a/business/partner/purchase/tiktok_store/store_sku2_utils.go b/business/partner/purchase/tiktok_store/store_sku2_utils.go
index 43c8faa6e..577f621d7 100644
--- a/business/partner/purchase/tiktok_store/store_sku2_utils.go
+++ b/business/partner/purchase/tiktok_store/store_sku2_utils.go
@@ -406,6 +406,8 @@ func (p *PurchaseHandler) createOrUpdateStoreSkus(ctx *jxcontext.Context, storeI
 					storeSku.VendorMainId = localThing[0].VendorThingID
 					mainIdInt = utils.Str2Int64(localThing[0].VendorThingID)
 				}
+			} else {
+				mainIdInt = utils.Str2Int64(storeSku.VendorMainId)
 			}
 
 			// 修改商品