diff --git a/relay/channel/baidu/dto.go b/relay/channel/baidu/dto.go
index 5168c11..f0c6f04 100644
--- a/relay/channel/baidu/dto.go
+++ b/relay/channel/baidu/dto.go
@@ -19,7 +19,7 @@ type BaiduChatRequest struct {
 	System          string         `json:"system,omitempty"`
 	DisableSearch   bool           `json:"disable_search,omitempty"`
 	EnableCitation  bool           `json:"enable_citation,omitempty"`
-	MaxOutputTokens int            `json:"max_output_tokens,omitempty"`
+	MaxOutputTokens *int           `json:"max_output_tokens,omitempty"`
 	UserId          string         `json:"user_id,omitempty"`
 }
 
diff --git a/relay/channel/baidu/relay-baidu.go b/relay/channel/baidu/relay-baidu.go
index d9e93c7..e313316 100644
--- a/relay/channel/baidu/relay-baidu.go
+++ b/relay/channel/baidu/relay-baidu.go
@@ -23,14 +23,17 @@ var baiduTokenStore sync.Map
 
 func requestOpenAI2Baidu(request dto.GeneralOpenAIRequest) *BaiduChatRequest {
 	baiduRequest := BaiduChatRequest{
-		Temperature:     request.Temperature,
-		TopP:            request.TopP,
-		PenaltyScore:    request.FrequencyPenalty,
-		Stream:          request.Stream,
-		DisableSearch:   false,
-		EnableCitation:  false,
-		MaxOutputTokens: int(request.MaxTokens),
-		UserId:          request.User,
+		Temperature:    request.Temperature,
+		TopP:           request.TopP,
+		PenaltyScore:   request.FrequencyPenalty,
+		Stream:         request.Stream,
+		DisableSearch:  false,
+		EnableCitation: false,
+		UserId:         request.User,
+	}
+	if request.MaxTokens != 0 {
+		maxTokens := int(request.MaxTokens)
+		baiduRequest.MaxOutputTokens = &maxTokens
 	}
 	for _, message := range request.Messages {
 		if message.Role == "system" {