diff --git a/platformapi/tiktok/tiktok_pay.go b/platformapi/tiktok/tiktok_pay.go
index 245a4ba2..06c546f0 100644
--- a/platformapi/tiktok/tiktok_pay.go
+++ b/platformapi/tiktok/tiktok_pay.go
@@ -29,7 +29,13 @@ func (a *API) Sign(paramsMap map[string]interface{}) string {
 		if value == "" || value == "nil" {
 			continue
 		}
-		paramsArr = append(paramsArr, value)
+		switch k {
+		// app_id, thirdparty_id, sign 字段用于标识身份，不参与签名
+		case "app_id", "thirdparty_id", "sign":
+		default:
+			paramsArr = append(paramsArr, value)
+		}
+		// paramsArr = append(paramsArr, value)
 	}
 
 	paramsArr = append(paramsArr, salt)