diff --git a/proto/im.go b/proto/im.go
index 0cabe7b..34247c2 100644
--- a/proto/im.go
+++ b/proto/im.go
@@ -33,7 +33,12 @@ type ModelParam struct {
 	APPID     string `json:"appid"`     //应用id
 	APISecret string `json:"apiSecret"` //应用密钥
 	APIKey    string `json:"apiKey"`    //应用key
-	System    string `json:"system"`    //系统参数
+	System    string `json:"system"`    //
+	//其他参数
+	Temperature float64 `json:"temperature"` //温度,默认0.5,核采样阈值。取值越高随机性越强，即相同的问题得到的不同答案的可能性越大
+	MaxTokens   int     `json:"maxTokens"`   //最大生成长度,默认4096
+	TopK        float64 `json:"topK"`        //取概率最大的前k个词
+	TopP        float64 `json:"topP"`        //取
 }
 
 type SessionResponse struct {
diff --git a/proto/status.go b/proto/status.go
index 8f7a148..4327d56 100644
--- a/proto/status.go
+++ b/proto/status.go
@@ -124,3 +124,9 @@ const (
 	ModelTypeDouBao = "doubao"
 	ModelTypeOllama = "ollama"
 )
+
+// 其它
+const (
+	SparkContextLength  = 6
+	DouBaoContextLength = 6
+)
diff --git a/service/doubao.go b/service/doubao.go
index 9a40975..9c19cba 100644
--- a/service/doubao.go
+++ b/service/doubao.go
@@ -116,6 +116,10 @@ func GetDouBaoSessionHistoryMsg(sessionID int, systemPrompt string, messages *[]
 	}
 	//获取该会话的历史消息
 	msgs := dao.FindMessageBySessionIDV2(sessionID)
+	if len(msgs) > proto.DouBaoContextLength {
+		//只取最后的 SparkContextLength 条消息
+		msgs = msgs[len(msgs)-proto.DouBaoContextLength-1:]
+	}
 	for _, v := range msgs {
 		var message model.ChatCompletionMessage
 		if v.Type == proto.UserToModelMsgType {
diff --git a/service/spark.go b/service/spark.go
index ef43442..65aabb2 100644
--- a/service/spark.go
+++ b/service/spark.go
@@ -290,6 +290,10 @@ func readResp(resp *http.Response) string {
 func GetSparkSessionHistoryMsg(sessionID int, systemPrompt string, messages *[]MessageContent, prompt string) error {
 	//获取会话的历史消息
 	msgs := dao.FindMessageBySessionIDV2(sessionID)
+	if len(msgs) > proto.SparkContextLength {
+		//只取最后的 SparkContextLength 条消息
+		msgs = msgs[len(msgs)-proto.SparkContextLength-1:]
+	}
 	//添加系统消息
 	if systemPrompt != "" {
 		var message MessageContent