diff --git a/service/spark.go b/service/spark.go
index 226bf41..0bca572 100644
--- a/service/spark.go
+++ b/service/spark.go
@@ -345,7 +345,7 @@ func genSparkParamsV2(userID int, appid string, domain string, sessionID int, sy
 			Chat: ChatParameter{
 				Domain:      domain,
 				Temperature: temperature,
-				MaxTokens:   10240, //最大10k
+				MaxTokens:   8192, //最大8k
 			},
 		},
 		Payload: SparkRequestPayload{