diff --git a/config/args.go b/config/args.go
index fe6b9bb..16e2b94 100644
--- a/config/args.go
+++ b/config/args.go
@@ -7,6 +7,9 @@ import (
 	"os"
 )
 
+// TunKeyByteLen 连接密钥固定字节长度（Local/Remote 必须一致）
+const TunKeyByteLen = 48
+
 var (
 	Arg_pprof_addr             string
 	Arg_tun_local              *bool
diff --git a/pro/local.go b/pro/local.go
index 943ed74..38c3ba6 100644
--- a/pro/local.go
+++ b/pro/local.go
@@ -41,7 +41,7 @@ func handleState0_RegisterSession(sessionID string, redisJson *RedisJsonType, co
 		log.Printf("注册会话失败: %v", err)
 		return false, err
 	}
-	log.Printf("已注册会话到队列，等待Remote端认领: %s", sessionID)
+	log.Printf("已注册会话，待Remote端处理: %s", sessionID)
 
 	// 等待Remote端认领并写入独立的session key
 	sessionClaimed := false
@@ -145,7 +145,7 @@ func GetLocalQuicConn(conn *net.UDPConn, addr *tun.AddrType, count int) (*tun.Tu
 	var tun_active *tun.TunActive
 	var tun_passive *tun.TunPassive
 
-	sessionIDBytes := go2.RandomBytes(24)
+	sessionIDBytes := go2.RandomBytes(config.TunKeyByteLen)
 	SessionID := string(sessionIDBytes)
 	log.Printf("会话ID: %s", SessionID)
 
diff --git a/ui2/ui.go b/ui2/ui.go
index 48ca13c..286d114 100644
--- a/ui2/ui.go
+++ b/ui2/ui.go
@@ -167,7 +167,7 @@ func createWorkTypeSelector(configInfo *goodlink_config.ConfigInfo) fyne.CanvasO
 // 创建连接密钥输入区域
 func createKeyInputSection(configInfo *goodlink_config.ConfigInfo) fyne.CanvasObject {
 	m_validated_key = widget.NewEntry()
-	m_validated_key.SetPlaceHolder("自定义16-24字节长度")
+	m_validated_key.SetPlaceHolder("16-64字节长度")
 	if len(configInfo.TunKey) > 0 {
 		m_validated_key.SetText(configInfo.TunKey)
 	}
@@ -182,7 +182,7 @@ func createKeyInputSection(configInfo *goodlink_config.ConfigInfo) fyne.CanvasOb
 // 创建密钥操作按钮组
 func createKeyButtons() fyne.CanvasObject {
 	m_button_key_create = widget.NewButtonWithIcon("生成密钥", theme.ContentAddIcon(), func() {
-		m_validated_key.SetText(string(go2.RandomBytes(24)))
+		m_validated_key.SetText(string(go2.RandomBytes(config.TunKeyByteLen)))
 	})
 
 	key_copy_button := widget.NewButtonWithIcon("复制密钥", theme.ContentCopyIcon(), func() {
@@ -211,7 +211,7 @@ func GetMainUI(myWindow *fyne.Window) *fyne.Container {
 
 	// 如果密钥为空，自动生成密钥
 	if len(configInfo.TunKey) == 0 {
-		configInfo.TunKey = string(go2.RandomBytes(24))
+		configInfo.TunKey = string(go2.RandomBytes(config.TunKeyByteLen))
 		log.Println("自动生成密钥:", configInfo.TunKey)
 	}