diff --git a/app/cmd/client.go b/app/cmd/client.go
index e556e55..2ecff7d 100644
--- a/app/cmd/client.go
+++ b/app/cmd/client.go
@@ -81,6 +81,7 @@ type clientConfig struct {
 	UQUICSpecID   quic.QUICID           `mapstructure:"uquicSpecID"` // 从 clientConfigQUIC 移到这里
 	Protocol      string                `mapstructure:"protocol"`
 	ProtocolParam string                `mapstructure:"protocolParam"`
+	XLESSUseFakeTCP bool                `mapstructure:"xlessUseFakeTCP"`
 }
 
 type clientConfigTransportUDP struct {
@@ -462,6 +463,7 @@ func (c *clientConfig) Config() (*client.Config, error) {
 		c.fillDecoyURL, 
 		c.fillUQUICConfig, // 新增
 		c.fillProtocolConfig, // <<< 新增这一行
+		c.fillXLESSUseFakeTCP, // 新增
 	}
 	for _, f := range fillers {
 		if err := f(hyConfig); err != nil {
@@ -885,6 +887,12 @@ func (c *clientConfig) fillDecoyURL(hyConfig *client.Config) error {
     return nil
 }
 
+// 2. 增加 fillXLESSUseFakeTCP 方法
+func (c *clientConfig) fillXLESSUseFakeTCP(hyConfig *client.Config) error {
+	hyConfig.XLESSUseFakeTCP = c.XLESSUseFakeTCP
+	return nil
+}
+
 // isPortHoppingPort returns whether the port string is a port hopping port.
 // We consider a port string to be a port hopping port if it contains "-" or ",".
 func isPortHoppingPort(port string) bool {
diff --git a/app/cmd/server.go b/app/cmd/server.go
index 7a30a67..cb3c511 100644
--- a/app/cmd/server.go
+++ b/app/cmd/server.go
@@ -79,6 +79,7 @@ type serverConfig struct {
 	UQUICSpecID           quic.QUICID                 `mapstructure:"uquicSpecID"` // 从 serverConfigQUIC 移到这里
 	Protocol              string                      `mapstructure:"protocol"`
 	ProtocolParam         string                      `mapstructure:"protocolParam"`
+	XLESSUseFakeTCP       bool                        `mapstructure:"xlessUseFakeTCP"`
 }
 
 // serverConfigObfs struct now directly embeds obfs.ObfuscatorConfig
@@ -298,6 +299,12 @@ func (c *serverConfig) fillUQUICConfig(hyConfig *server.Config) error {
 	return nil
 }
 
+// 2. 增加 fillXLESSUseFakeTCP 方法
+func (c *serverConfig) fillXLESSUseFakeTCP(hyConfig *server.Config) error {
+	hyConfig.XLESSUseFakeTCP = c.XLESSUseFakeTCP
+	return nil
+}
+
 func (c *serverConfig) fillTLSConfig(hyConfig *server.Config) error {
 	// If both TLS and ACME are unset, fallback to protean mimic cert
 	if c.TLS == nil && c.ACME == nil {
@@ -1058,6 +1065,7 @@ func (c *serverConfig) Config() (*server.Config, error) {
 		c.fillDecoyURL,
 		c.fillUQUICConfig, // 保持不变
 		c.fillProtocolConfig, // <<< 新增这一行
+		c.fillXLESSUseFakeTCP, // 新增
 	}
 	for _, f := range fillers {
 		if err := f(hyConfig); err != nil {