diff --git a/.env.example b/.env.example
index 212d1e7..d013a48 100644
--- a/.env.example
+++ b/.env.example
@@ -1,5 +1,7 @@
 APP_ID=
 APP_SECRET=
+LARK_OPEN_BASE_URL=
+LARK_WWW_BASE_URL=
 CHATGPT_API_KEY=
 CHATGPT_API_URL=
 ENABLE_SESSION_FOR_LARK_GROUP=true
\ No newline at end of file
diff --git a/larkgpt/client.go b/larkgpt/client.go
index 5440627..2494910 100644
--- a/larkgpt/client.go
+++ b/larkgpt/client.go
@@ -18,8 +18,10 @@ type Client struct {
 
 type ClientConfig struct {
 	// Lark
-	AppID     string
-	AppSecret string
+	AppID           string
+	AppSecret       string
+	LarkOpenBaseURL string
+	LarkWWWBaseURL  string
 
 	// ChatGPT
 	ChatGPTAPIKey string
@@ -40,7 +42,16 @@ func New(config *ClientConfig) *Client {
 		res.metricsIns = new(noneMetrics)
 	}
 
-	res.larkIns = newLarkClient(lark.New(lark.WithAppCredential(config.AppID, config.AppSecret)), res.metricsIns)
+	larkOption := []lark.ClientOptionFunc{
+		lark.WithAppCredential(config.AppID, config.AppSecret),
+	}
+	if config.LarkOpenBaseURL != "" {
+		larkOption = append(larkOption, lark.WithOpenBaseURL(config.LarkOpenBaseURL))
+	}
+	if config.LarkWWWBaseURL != "" {
+		larkOption = append(larkOption, lark.WithWWWBaseURL(config.LarkWWWBaseURL))
+	}
+	res.larkIns = newLarkClient(lark.New(larkOption...), res.metricsIns)
 
 	res.chatGPTIns = newChatGPTClient(config.ChatGPTAPIURL, config.ChatGPTAPIKey, res.metricsIns)
 
diff --git a/main.go b/main.go
index bc44d5e..f1c3feb 100644
--- a/main.go
+++ b/main.go
@@ -4,8 +4,9 @@ import (
 	"log"
 	"os"
 
-	"github.com/bytemate/larkgpt/larkgpt"
 	"github.com/joho/godotenv"
+
+	"github.com/bytemate/larkgpt/larkgpt"
 )
 
 func main() {
@@ -30,6 +31,8 @@ func loadConfig() (*larkgpt.ClientConfig, error) {
 	return &larkgpt.ClientConfig{
 		AppID:                     os.Getenv("APP_ID"),
 		AppSecret:                 os.Getenv("APP_SECRET"),
+		LarkOpenBaseURL:           os.Getenv("LARK_OPEN_BASE_URL"), // default is https://open.feishu.cn, for larksuite, please use https://open.larksuite.com
+		LarkWWWBaseURL:            os.Getenv("LARK_WWW_BASE_URL"),  // default is https://www.feishu.cn, for larksuite, please use https://www.larksuite.com
 		ChatGPTAPIKey:             os.Getenv("CHATGPT_API_KEY"),
 		ChatGPTAPIURL:             os.Getenv("CHATGPT_API_URL"),
 		ServerPort:                port,