diff --git a/server/product/internal/types/types.go b/server/product/internal/types/types.go
index ce203d35..98d6ed74 100644
--- a/server/product/internal/types/types.go
+++ b/server/product/internal/types/types.go
@@ -173,7 +173,7 @@ type TemplateTagColorInfo struct {
 
 type GetProductModelsReq struct {
 	ProductIds  string `form:"product_ids"`
-	TemplateTag string `form:"template_tag"`
+	TemplateTag string `form:"template_tag,optional"`
 }
 
 type ProductItem struct {