diff --git a/parser_test.go b/parser_test.go
index 6d15f41..d81f4b2 100644
--- a/parser_test.go
+++ b/parser_test.go
@@ -29,7 +29,7 @@ func (tt *Toutiao) ToDoParser(adstring string) (string, error) {
 
 	log.Println(adstring)
 	adstring = strconv.QuoteToASCII(adstring)
-	var adlist []interface{}
+	var adlist []string
 	if err := json.Unmarshal([]byte(adstring), &adlist); err != nil {
 		log.Println(err)
 	}