diff --git a/business/partner/purchase/ebai/store_sku2.go b/business/partner/purchase/ebai/store_sku2.go
index 559652643..cee84f063 100644
--- a/business/partner/purchase/ebai/store_sku2.go
+++ b/business/partner/purchase/ebai/store_sku2.go
@@ -590,7 +590,7 @@ func genSkuParamsFromStoreSkuInfo2(storeSku *dao.StoreSkuSyncInfo, isCreate, isE
 		}
 		attr["spec_property"] = sepcProperty
 		params["sku_spec"] = []interface{}{attr}
-		params["cat_property"] = catProperty
+		params["cat_property"] = catProperty[:3]
 	}
 	// todo 饿百如果给的UPC是空要报错，但如果我要删除UPC怎么弄？
 	// if storeSku.Upc != "" {