diff --git a/sub/subJsonService.go b/sub/subJsonService.go
index 680a078d..8786541e 100644
--- a/sub/subJsonService.go
+++ b/sub/subJsonService.go
@@ -21,7 +21,7 @@ type SubJsonService struct {
 	configJson       map[string]interface{}
 	defaultOutbounds []json_util.RawMessage
 	fragment         string
-	noises            string
+	noises           string
 	mux              string
 
 	inboundService service.InboundService
@@ -61,7 +61,7 @@ func NewSubJsonService(fragment string, noises string, mux string, rules string,
 		configJson:       configJson,
 		defaultOutbounds: defaultOutbounds,
 		fragment:         fragment,
-		noises:            noises,
+		noises:           noises,
 		mux:              mux,
 		SubService:       subService,
 	}
@@ -217,7 +217,7 @@ func (s *SubJsonService) streamData(stream string) map[string]interface{} {
 	delete(streamSettings, "sockopt")
 
 	if s.fragment != "" {
-		streamSettings["sockopt"] = json_util.RawMessage(`{"dialerProxy": "fragment", "tcpKeepAliveIdle": 100, "tcpMptcp": true, "tcpNoDelay": true}`)
+		streamSettings["sockopt"] = json_util.RawMessage(`{"dialerProxy": "fragment", "tcpKeepAliveIdle": 100, "tcpMptcp": true, "penetrate": true}`)
 	}
 
 	// remove proxy protocol
diff --git a/web/assets/js/model/inbound.js b/web/assets/js/model/inbound.js
index c07699b8..f18a190c 100644
--- a/web/assets/js/model/inbound.js
+++ b/web/assets/js/model/inbound.js
@@ -816,7 +816,7 @@ class SockoptStreamSettings extends XrayCommonClass {
         mark = 0,
         tproxy = "off",
         tcpMptcp = false,
-        tcpNoDelay = false,
+        penetrate = false,
         domainStrategy = DOMAIN_STRATEGY_OPTION.USE_IP,
         tcpMaxSeg = 1440,
         dialerProxy = "",
@@ -834,7 +834,7 @@ class SockoptStreamSettings extends XrayCommonClass {
         this.mark = mark;
         this.tproxy = tproxy;
         this.tcpMptcp = tcpMptcp;
-        this.tcpNoDelay = tcpNoDelay;
+        this.penetrate = penetrate;
         this.domainStrategy = domainStrategy;
         this.tcpMaxSeg = tcpMaxSeg;
         this.dialerProxy = dialerProxy;
@@ -855,7 +855,7 @@ class SockoptStreamSettings extends XrayCommonClass {
             json.mark,
             json.tproxy,
             json.tcpMptcp,
-            json.tcpNoDelay,
+            json.penetrate,
             json.domainStrategy,
             json.tcpMaxSeg,
             json.dialerProxy,
@@ -876,7 +876,7 @@ class SockoptStreamSettings extends XrayCommonClass {
             mark: this.mark,
             tproxy: this.tproxy,
             tcpMptcp: this.tcpMptcp,
-            tcpNoDelay: this.tcpNoDelay,
+            penetrate: this.penetrate,
             domainStrategy: this.domainStrategy,
             tcpMaxSeg: this.tcpMaxSeg,
             dialerProxy: this.dialerProxy,
diff --git a/web/assets/js/model/outbound.js b/web/assets/js/model/outbound.js
index d58839bc..4bf88e0c 100644
--- a/web/assets/js/model/outbound.js
+++ b/web/assets/js/model/outbound.js
@@ -411,14 +411,14 @@ class SockoptStreamSettings extends CommonClass {
         tcpFastOpen = false,
         tcpKeepAliveInterval = 0,
         tcpMptcp = false,
-        tcpNoDelay = false
+        penetrate = false
     ) {
         super();
         this.dialerProxy = dialerProxy;
         this.tcpFastOpen = tcpFastOpen;
         this.tcpKeepAliveInterval = tcpKeepAliveInterval;
         this.tcpMptcp = tcpMptcp;
-        this.tcpNoDelay = tcpNoDelay;
+        this.penetrate = penetrate;
     }
 
     static fromJson(json = {}) {
@@ -428,7 +428,7 @@ class SockoptStreamSettings extends CommonClass {
             json.tcpFastOpen,
             json.tcpKeepAliveInterval,
             json.tcpMptcp,
-            json.tcpNoDelay,
+            json.penetrate,
         );
     }
 
@@ -438,7 +438,7 @@ class SockoptStreamSettings extends CommonClass {
             tcpFastOpen: this.tcpFastOpen,
             tcpKeepAliveInterval: this.tcpKeepAliveInterval,
             tcpMptcp: this.tcpMptcp,
-            tcpNoDelay: this.tcpNoDelay,
+            penetrate: this.penetrate,
         };
     }
 }
diff --git a/web/html/xui/form/outbound.html b/web/html/xui/form/outbound.html
index 0293ffa8..f1f76940 100644
--- a/web/html/xui/form/outbound.html
+++ b/web/html/xui/form/outbound.html
@@ -474,8 +474,8 @@
         <a-form-item label="Multipath TCP">
           <a-switch v-model.trim="outbound.stream.sockopt.tcpMptcp"></a-switch>
         </a-form-item>
-        <a-form-item label="TCP No-Delay" v-if="outbound.stream.sockopt.tcpMptcp">
-          <a-switch v-model="outbound.stream.sockopt.tcpNoDelay"></a-switch>
+        <a-form-item label="Penetrate">
+          <a-switch v-model="outbound.stream.sockopt.penetrate"></a-switch>
         </a-form-item>
       </template>
 
diff --git a/web/html/xui/form/stream/stream_sockopt.html b/web/html/xui/form/stream/stream_sockopt.html
index c08074ee..9eea55ea 100644
--- a/web/html/xui/form/stream/stream_sockopt.html
+++ b/web/html/xui/form/stream/stream_sockopt.html
@@ -32,8 +32,8 @@
         <a-form-item label="Multipath TCP">
             <a-switch v-model.trim="inbound.stream.sockopt.tcpMptcp"></a-switch>
         </a-form-item>
-        <a-form-item label="TCP No-Delay" v-if="inbound.stream.sockopt.tcpMptcp">
-            <a-switch v-model.trim="inbound.stream.sockopt.tcpNoDelay"></a-switch>
+        <a-form-item label="Penetrate">
+            <a-switch v-model.trim="inbound.stream.sockopt.penetrate"></a-switch>
         </a-form-item>
         <a-form-item label="V6 Only">
             <a-switch v-model.trim="inbound.stream.sockopt.V6Only"></a-switch>
diff --git a/web/html/xui/settings.html b/web/html/xui/settings.html
index 0c70ca1c..2c8515e2 100644
--- a/web/html/xui/settings.html
+++ b/web/html/xui/settings.html
@@ -439,7 +439,7 @@
           sockopt: {
             tcpKeepAliveIdle: 100,
             tcpMptcp: true,
-            tcpNoDelay: true
+            penetrate: true
           }
         }
       },