diff --git a/router/router.go b/router/router.go
index c0a1972..7f0e132 100644
--- a/router/router.go
+++ b/router/router.go
@@ -13,6 +13,7 @@ import (
 	"net/http"
 	"net/http/httputil"
 	"opencatd-open/store"
+	"os"
 	"strings"
 	"time"
 
@@ -90,6 +91,13 @@ type ChatCompletionResponse struct {
 	} `json:"usage"`
 }
 
+func init() {
+	if openai_endpoint := os.Getenv("openai_endpoint"); openai_endpoint != "" {
+		log.Println("replace %s to %s", baseUrl, openai_endpoint)
+		baseUrl = openai_endpoint
+	}
+}
+
 func AuthMiddleware() gin.HandlerFunc {
 	return func(c *gin.Context) {
 		if rootToken == "" {