diff --git a/reflect.go b/reflect.go
index aa11abe..4d0daee 100644
--- a/reflect.go
+++ b/reflect.go
@@ -79,6 +79,7 @@ func (rt *ReflectType) Do(dataFlag string, data interface{}) *StructInfo {
 		rt.fillMappingRule(field, reflectType.Field(idx).Tag.Get(MappingTag))
 		res.StructFieldList = append(res.StructFieldList, field)
 	}
+	rt.cacheTable[dataFlag] = res
 	return res
 }