diff --git a/app/src/main/java/io/nekohasekai/sagernet/Constants.kt b/app/src/main/java/io/nekohasekai/sagernet/Constants.kt
index 4d29104..edf9993 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/Constants.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/Constants.kt
@@ -52,9 +52,6 @@ object Key {
     const val ALWAYS_SHOW_ADDRESS = "alwaysShowAddress"
 
     // Protocol Settings
-    const val MUX_TYPE = "muxType"
-    const val MUX_PROTOCOLS = "mux"
-    const val MUX_CONCURRENCY = "muxConcurrency"
     const val GLOBAL_ALLOW_INSECURE = "globalAllowInsecure"
 
     const val ACQUIRE_WAKE_LOCK = "acquireWakeLock"
diff --git a/app/src/main/java/io/nekohasekai/sagernet/database/DataStore.kt b/app/src/main/java/io/nekohasekai/sagernet/database/DataStore.kt
index 7ace0b8..f710f00 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/database/DataStore.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/database/DataStore.kt
@@ -169,9 +169,6 @@ object DataStore : OnPreferenceDataStoreChangeListener {
 
     // protocol
 
-    var muxType by configurationStore.stringToInt(Key.MUX_TYPE)
-    var muxProtocols by configurationStore.stringSet(Key.MUX_PROTOCOLS)
-    var muxConcurrency by configurationStore.stringToInt(Key.MUX_CONCURRENCY) { 8 }
     var globalAllowInsecure by configurationStore.boolean(Key.GLOBAL_ALLOW_INSECURE) { false }
 
     // old cache, DO NOT ADD
diff --git a/app/src/main/java/io/nekohasekai/sagernet/database/ProxyEntity.kt b/app/src/main/java/io/nekohasekai/sagernet/database/ProxyEntity.kt
index 45f0a31..8d2b129 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/database/ProxyEntity.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/database/ProxyEntity.kt
@@ -33,6 +33,7 @@ import io.nekohasekai.sagernet.ktx.app
 import io.nekohasekai.sagernet.ktx.applyDefaultValues
 import io.nekohasekai.sagernet.ui.profile.*
 import moe.matsuri.nb4a.Protocols
+import moe.matsuri.nb4a.SingBoxOptions.MultiplexOptions
 import moe.matsuri.nb4a.proxy.config.ConfigBean
 import moe.matsuri.nb4a.proxy.config.ConfigSettingActivity
 import moe.matsuri.nb4a.proxy.neko.*
@@ -309,19 +310,31 @@ data class ProxyEntity(
         }
     }
 
-    fun needCoreMux(): Boolean {
+    fun singMux(): MultiplexOptions? {
         return when (type) {
-            TYPE_VMESS -> if (vmessBean!!.isVLESS) {
-                Protocols.isProfileNeedMux(vmessBean!!) && Protocols.shouldEnableMux("vless")
-            } else {
-                Protocols.isProfileNeedMux(vmessBean!!) && Protocols.shouldEnableMux("vmess")
+            TYPE_VMESS -> MultiplexOptions().apply {
+                enabled = vmessBean!!.enableMux
+                padding = vmessBean!!.muxPadding
+                max_streams = vmessBean!!.muxConcurrency
+                protocol = when (vmessBean!!.muxType) {
+                    1 -> "smux"
+                    2 -> "yamux"
+                    else -> "h2mux"
+                }
             }
 
-            TYPE_TROJAN -> Protocols.isProfileNeedMux(trojanBean!!)
-                    && Protocols.shouldEnableMux("trojan")
+            TYPE_TROJAN -> MultiplexOptions().apply {
+                enabled = trojanBean!!.enableMux
+                padding = trojanBean!!.muxPadding
+                max_streams = trojanBean!!.muxConcurrency
+                protocol = when (trojanBean!!.muxType) {
+                    1 -> "smux"
+                    2 -> "yamux"
+                    else -> "h2mux"
+                }
+            }
 
-            TYPE_SS -> !ssBean!!.sUoT && Protocols.shouldEnableMux("shadowsocks")
-            else -> false
+            else -> null
         }
     }
 
diff --git a/app/src/main/java/io/nekohasekai/sagernet/fmt/ConfigBuilder.kt b/app/src/main/java/io/nekohasekai/sagernet/fmt/ConfigBuilder.kt
index b9bc150..686bce1 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/fmt/ConfigBuilder.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/fmt/ConfigBuilder.kt
@@ -383,18 +383,12 @@ fun buildConfig(
 //                        val keepAliveInterval = DataStore.tcpKeepAliveInterval
 //                        val needKeepAliveInterval = keepAliveInterval !in intArrayOf(0, 15)
 
-                        if (!muxApplied && proxyEntity.needCoreMux()) {
-                            muxApplied = true
-                            currentOutbound["multiplex"] = MultiplexOptions().apply {
-                                enabled = true
-                                padding = Protocols.shouldEnableMux("padding")
-                                max_streams = DataStore.muxConcurrency
-                                protocol = when (DataStore.muxType) {
-                                    1 -> "smux"
-                                    2 -> "yamux"
-                                    else -> "h2mux"
-                                }
-                            }.asMap()
+                        if (!muxApplied) {
+                            val muxObj = proxyEntity.singMux()
+                            if (muxObj != null && muxObj.enabled) {
+                                muxApplied = true
+                                currentOutbound["multiplex"] = muxObj.asMap()
+                            }
                         }
                     }
                 }
diff --git a/app/src/main/java/io/nekohasekai/sagernet/fmt/trojan_go/TrojanGoFmt.kt b/app/src/main/java/io/nekohasekai/sagernet/fmt/trojan_go/TrojanGoFmt.kt
index cb02357..4e6e91f 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/fmt/trojan_go/TrojanGoFmt.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/fmt/trojan_go/TrojanGoFmt.kt
@@ -92,10 +92,10 @@ fun TrojanGoBean.buildTrojanGoConfig(port: Int): String {
             put(password)
         })
         put("log_level", if (DataStore.logLevel > 0) 0 else 2)
-        if (Protocols.shouldEnableMux("trojan-go")) put("mux", JSONObject().apply {
-            put("enabled", true)
-            put("concurrency", DataStore.muxConcurrency)
-        })
+//        if (Protocols.shouldEnableMux("trojan-go")) put("mux", JSONObject().apply {
+//            put("enabled", true)
+//            put("concurrency", DataStore.muxConcurrency)
+//        })
         put("tcp", JSONObject().apply {
             put("prefer_ipv4", DataStore.ipv6Mode <= IPv6Mode.ENABLE)
         })
diff --git a/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/StandardV2RayBean.java b/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/StandardV2RayBean.java
index bdd82c7..b3cbcc4 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/StandardV2RayBean.java
+++ b/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/StandardV2RayBean.java
@@ -52,11 +52,20 @@ public abstract class StandardV2RayBean extends AbstractBean {
 
     public Boolean enableECH;
 
+    public String echConfig;
+
+    // sing-box 不再使用
     public Boolean enablePqSignature;
 
     public Boolean disabledDRS;
 
-    public String echConfig;
+    // --------------------------------------- Mux
+
+    public Boolean enableMux;
+    public Boolean muxPadding;
+    public Integer muxType;
+    public Integer muxConcurrency;
+
 
     // --------------------------------------- //
 
@@ -101,11 +110,16 @@ public abstract class StandardV2RayBean extends AbstractBean {
         if (JavaUtil.isNullOrBlank(echConfig)) echConfig = "";
         if (enablePqSignature == null) enablePqSignature = false;
         if (disabledDRS == null) disabledDRS = false;
+
+        if (enableMux == null) enableMux = false;
+        if (muxPadding == null) muxPadding = false;
+        if (muxType == null) muxType = 0;
+        if (muxConcurrency == null) muxConcurrency = 1;
     }
 
     @Override
     public void serialize(ByteBufferOutput output) {
-        output.writeInt(1);
+        output.writeInt(2);
         super.serialize(output);
         output.writeString(uuid);
         output.writeString(encryption);
@@ -160,6 +174,11 @@ public abstract class StandardV2RayBean extends AbstractBean {
         }
 
         output.writeInt(packetEncoding);
+
+        output.writeBoolean(enableMux);
+        output.writeBoolean(muxPadding);
+        output.writeInt(muxType);
+        output.writeInt(muxConcurrency);
     }
 
     @Override
@@ -239,6 +258,13 @@ public abstract class StandardV2RayBean extends AbstractBean {
         }
 
         packetEncoding = input.readInt();
+
+        if (version >= 2) {
+            enableMux = input.readBoolean();
+            muxPadding = input.readBoolean();
+            muxType = input.readInt();
+            muxConcurrency = input.readInt();
+        }
     }
 
     @Override
@@ -251,6 +277,10 @@ public abstract class StandardV2RayBean extends AbstractBean {
         bean.enableECH = enableECH;
         bean.disabledDRS = disabledDRS;
         bean.echConfig = echConfig;
+        bean.enableMux = enableMux;
+        bean.muxPadding = muxPadding;
+        bean.muxType = muxType;
+        bean.muxConcurrency = muxConcurrency;
     }
 
     public boolean isVLESS() {
diff --git a/app/src/main/java/io/nekohasekai/sagernet/group/RawUpdater.kt b/app/src/main/java/io/nekohasekai/sagernet/group/RawUpdater.kt
index fc70e58..02041af 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/group/RawUpdater.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/group/RawUpdater.kt
@@ -416,6 +416,20 @@ object RawUpdater : GroupUpdater() {
                                                 realityOpt.value.toString()
                                         }
                                     }
+
+                                    "smux" -> for (smuxOpt in (opt.value as Map<String, Any>)) {
+                                        when (smuxOpt.key.lowercase()) {
+                                            "enabled" -> bean.enableMux =
+                                                smuxOpt.value.toString() == "true"
+
+                                            "max-streams" -> bean.muxConcurrency =
+                                                smuxOpt.value.toString().toInt()
+
+                                            "padding" -> bean.muxPadding =
+                                                smuxOpt.value.toString() == "true"
+                                        }
+                                    }
+
                                 }
                             }
                             if (isHttpUpgrade) {
@@ -475,6 +489,19 @@ object RawUpdater : GroupUpdater() {
                                                 grpcOpt.value.toString()
                                         }
                                     }
+
+                                    "smux" -> for (smuxOpt in (opt.value as Map<String, Any>)) {
+                                        when (smuxOpt.key.lowercase()) {
+                                            "enabled" -> bean.enableMux =
+                                                smuxOpt.value.toString() == "true"
+
+                                            "max-streams" -> bean.muxConcurrency =
+                                                smuxOpt.value.toString().toInt()
+
+                                            "padding" -> bean.muxPadding =
+                                                smuxOpt.value.toString() == "true"
+                                        }
+                                    }
                                 }
                             }
                             if (isHttpUpgrade) {
diff --git a/app/src/main/java/io/nekohasekai/sagernet/ui/SettingsPreferenceFragment.kt b/app/src/main/java/io/nekohasekai/sagernet/ui/SettingsPreferenceFragment.kt
index ff1e669..254529a 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/ui/SettingsPreferenceFragment.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/ui/SettingsPreferenceFragment.kt
@@ -17,7 +17,6 @@ import io.nekohasekai.sagernet.database.preference.EditTextPreferenceModifiers
 import io.nekohasekai.sagernet.ktx.*
 import io.nekohasekai.sagernet.utils.Theme
 import io.nekohasekai.sagernet.widget.AppListPreference
-import moe.matsuri.nb4a.Protocols
 import moe.matsuri.nb4a.ui.*
 
 class SettingsPreferenceFragment : PreferenceFragmentCompat() {
@@ -81,7 +80,6 @@ class SettingsPreferenceFragment : PreferenceFragmentCompat() {
         val ipv6Mode = findPreference<Preference>(Key.IPV6_MODE)!!
         val trafficSniffing = findPreference<Preference>(Key.TRAFFIC_SNIFFING)!!
 
-        val muxConcurrency = findPreference<EditTextPreference>(Key.MUX_CONCURRENCY)!!
         val tcpKeepAliveInterval = findPreference<EditTextPreference>(Key.TCP_KEEP_ALIVE_INTERVAL)!!
         tcpKeepAliveInterval.isVisible = false
 
@@ -123,16 +121,7 @@ class SettingsPreferenceFragment : PreferenceFragmentCompat() {
             true
         }
 
-        val muxProtocols = findPreference<MultiSelectListPreference>(Key.MUX_PROTOCOLS)!!
-
-        muxProtocols.apply {
-            val e = Protocols.getCanMuxList().toTypedArray()
-            entries = e
-            entryValues = e
-        }
-
         portLocalDns.setOnBindEditTextListener(EditTextPreferenceModifiers.Port)
-        muxConcurrency.setOnBindEditTextListener(EditTextPreferenceModifiers.Port)
         mixedPort.setOnBindEditTextListener(EditTextPreferenceModifiers.Port)
 
         val metedNetwork = findPreference<Preference>(Key.METERED_NETWORK)!!
@@ -175,7 +164,6 @@ class SettingsPreferenceFragment : PreferenceFragmentCompat() {
         appendHttpProxy.onPreferenceChangeListener = reloadListener
         showDirectSpeed.onPreferenceChangeListener = reloadListener
         trafficSniffing.onPreferenceChangeListener = reloadListener
-        muxConcurrency.onPreferenceChangeListener = reloadListener
         tcpKeepAliveInterval.onPreferenceChangeListener = reloadListener
         bypassLan.onPreferenceChangeListener = reloadListener
         bypassLanInCore.onPreferenceChangeListener = reloadListener
diff --git a/app/src/main/java/io/nekohasekai/sagernet/ui/profile/StandardV2RaySettingsActivity.kt b/app/src/main/java/io/nekohasekai/sagernet/ui/profile/StandardV2RaySettingsActivity.kt
index 90d5066..b8ba4da 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/ui/profile/StandardV2RaySettingsActivity.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/ui/profile/StandardV2RaySettingsActivity.kt
@@ -47,6 +47,11 @@ abstract class StandardV2RaySettingsActivity : ProfileSettingsActivity<StandardV
     private val enableECH = pbm.add(PreferenceBinding(Type.Bool, "enableECH"))
     private val echConfig = pbm.add(PreferenceBinding(Type.Text, "echConfig"))
 
+    private val enableMux = pbm.add(PreferenceBinding(Type.Bool, "enableMux"))
+    private val muxPadding = pbm.add(PreferenceBinding(Type.Bool, "muxPadding"))
+    private val muxType = pbm.add(PreferenceBinding(Type.TextToInt, "muxType"))
+    private val muxConcurrency = pbm.add(PreferenceBinding(Type.TextToInt, "muxConcurrency"))
+
     override fun StandardV2RayBean.init() {
         if (this is TrojanBean) {
             this@StandardV2RaySettingsActivity.uuid.fieldName = "password"
@@ -158,6 +163,7 @@ abstract class StandardV2RaySettingsActivity : ProfileSettingsActivity<StandardV
                 host.preference.isVisible = true
                 path.preference.isVisible = true
             }
+
             "ws" -> {
                 host.preference.setTitle(R.string.ws_host)
                 path.preference.setTitle(R.string.ws_path)
diff --git a/app/src/main/java/moe/matsuri/nb4a/Protocols.kt b/app/src/main/java/moe/matsuri/nb4a/Protocols.kt
index 2fa9d80..2bbafbf 100644
--- a/app/src/main/java/moe/matsuri/nb4a/Protocols.kt
+++ b/app/src/main/java/moe/matsuri/nb4a/Protocols.kt
@@ -2,43 +2,13 @@ package moe.matsuri.nb4a
 
 import android.content.Context
 import io.nekohasekai.sagernet.R
-import io.nekohasekai.sagernet.database.DataStore
 import io.nekohasekai.sagernet.database.ProxyEntity.Companion.TYPE_NEKO
 import io.nekohasekai.sagernet.fmt.AbstractBean
-import io.nekohasekai.sagernet.fmt.v2ray.StandardV2RayBean
-import io.nekohasekai.sagernet.fmt.v2ray.isTLS
 import io.nekohasekai.sagernet.ktx.app
 import io.nekohasekai.sagernet.ktx.getColorAttr
-import moe.matsuri.nb4a.plugin.NekoPluginManager
 
 // Settings for all protocols, built-in or plugin
 object Protocols {
-    // Mux
-
-    fun isProfileNeedMux(bean: StandardV2RayBean): Boolean {
-        return when (bean.type) {
-            "tcp", "ws" -> true
-            "http" -> !bean.isTLS()
-            else -> false
-        }
-    }
-
-    fun shouldEnableMux(protocol: String): Boolean {
-        return DataStore.muxProtocols.contains(protocol)
-    }
-
-    fun getCanMuxList(): List<String> {
-        // built-in and support mux
-        val list = mutableListOf("vmess", "trojan", "trojan-go", "shadowsocks", "vless", "padding")
-
-        NekoPluginManager.getProtocols().forEach {
-            if (it.protocolConfig.optBoolean("canMux")) {
-                list.add(it.protocolId)
-            }
-        }
-
-        return list
-    }
 
     // Deduplication
 
diff --git a/app/src/main/java/moe/matsuri/nb4a/proxy/neko/NekoFmt.kt b/app/src/main/java/moe/matsuri/nb4a/proxy/neko/NekoFmt.kt
index 88e45ec..eb29e53 100644
--- a/app/src/main/java/moe/matsuri/nb4a/proxy/neko/NekoFmt.kt
+++ b/app/src/main/java/moe/matsuri/nb4a/proxy/neko/NekoFmt.kt
@@ -65,8 +65,8 @@ suspend fun NekoBean.updateAllConfig(port: Int) = suspendCoroutine<Unit> {
             val otherArgs = mutableMapOf<String, Any>()
             otherArgs["finalAddress"] = finalAddress
             otherArgs["finalPort"] = finalPort
-            otherArgs["muxEnabled"] = Protocols.shouldEnableMux(protocolId)
-            otherArgs["muxConcurrency"] = DataStore.muxConcurrency
+//            otherArgs["muxEnabled"] = Protocols.shouldEnableMux(protocolId)
+//            otherArgs["muxConcurrency"] = DataStore.muxConcurrency
 
             val ret = jsip.buildAllConfig(port, this@updateAllConfig, otherArgs)
 
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index ff5f33e..196858c 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -568,4 +568,6 @@
     <string name="allow_insecure_on_request_sum">Disable certificate checking when updating
         subscriptions</string>
     <string name="global_allow_insecure">Always allow insecure</string>
+    <string name="mux_preference">Mulitplex</string>
+    <string name="padding">Padding</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/xml/global_preferences.xml b/app/src/main/res/xml/global_preferences.xml
index e612ad9..463e92a 100644
--- a/app/src/main/res/xml/global_preferences.xml
+++ b/app/src/main/res/xml/global_preferences.xml
@@ -134,34 +134,6 @@
             app:useSimpleSummaryProvider="true" />
     </PreferenceCategory>
 
-    <PreferenceCategory app:title="@string/protocol_settings">
-        <MultiSelectListPreference
-            app:defaultValue="@array/mux_select_init"
-            app:entries="@array/mux_select_init"
-            app:entryValues="@array/mux_select_init"
-            app:icon="@drawable/ic_baseline_compare_arrows_24"
-            app:key="mux"
-            app:summary="@string/mux_sum"
-            app:title="@string/enable_mux" />
-        <moe.matsuri.nb4a.ui.SimpleMenuPreference
-            app:defaultValue="0"
-            app:entries="@array/mux_type"
-            app:entryValues="@array/int_array_3"
-            app:key="muxType"
-            app:title="@string/mux_type"
-            app:useSimpleSummaryProvider="true" />
-        <EditTextPreference
-            app:defaultValue="8"
-            app:icon="@drawable/ic_baseline_low_priority_24"
-            app:key="muxConcurrency"
-            app:title="@string/mux_concurrency"
-            app:useSimpleSummaryProvider="true" />
-        <SwitchPreference
-            app:key="globalAllowInsecure"
-            app:icon="@drawable/ic_action_lock_open"
-            app:title="@string/global_allow_insecure" />
-    </PreferenceCategory>
-
     <PreferenceCategory app:title="@string/cag_dns">
         <EditTextPreference
             app:defaultValue="https://dns.google/dns-query"
@@ -267,5 +239,9 @@
         <SwitchPreference
             app:key="allowInsecureOnRequest"
             app:title="@string/allow_insecure_on_request_sum" />
+        <SwitchPreference
+            app:icon="@drawable/ic_action_lock_open"
+            app:key="globalAllowInsecure"
+            app:title="@string/global_allow_insecure" />
     </PreferenceCategory>
 </PreferenceScreen>
diff --git a/app/src/main/res/xml/standard_v2ray_preferences.xml b/app/src/main/res/xml/standard_v2ray_preferences.xml
index 5717c75..fd679e4 100644
--- a/app/src/main/res/xml/standard_v2ray_preferences.xml
+++ b/app/src/main/res/xml/standard_v2ray_preferences.xml
@@ -118,11 +118,6 @@
             app:key="allowInsecure"
             app:summary="@string/allow_insecure_sum"
             app:title="@string/allow_insecure" />
-        <SwitchPreference
-            app:icon="@drawable/ic_baseline_security_24"
-            app:key="enableECH"
-            app:summary="@string/enable_ech_sum"
-            app:title="@string/enable_ech" />
     </PreferenceCategory>
 
     <PreferenceCategory
@@ -149,10 +144,41 @@
     </PreferenceCategory>
 
     <PreferenceCategory
-        app:key="serverECHCategory"
-        app:title="@string/ech_settings">
+        app:key="serverMuxCategory"
+        app:title="@string/mux_preference">
+        <SwitchPreference
+            app:icon="@drawable/ic_baseline_compare_arrows_24"
+            app:key="enableMux"
+            app:summary="@string/mux_sum"
+            app:title="@string/enable_mux" />
+        <moe.matsuri.nb4a.ui.SimpleMenuPreference
+            app:defaultValue="0"
+            app:entries="@array/mux_type"
+            app:entryValues="@array/int_array_3"
+            app:key="muxType"
+            app:title="@string/mux_type"
+            app:useSimpleSummaryProvider="true" />
         <EditTextPreference
-            app:icon="@drawable/ic_baseline_texture_24"
+            app:defaultValue="1"
+            app:icon="@drawable/ic_baseline_low_priority_24"
+            app:key="muxConcurrency"
+            app:title="@string/mux_concurrency"
+            app:useSimpleSummaryProvider="true" />
+        <SwitchPreference
+            app:icon="@drawable/baseline_developer_board_24"
+            app:key="muxPadding"
+            app:title="@string/padding" />
+    </PreferenceCategory>
+
+    <PreferenceCategory
+        app:key="serverECHCategory"
+        app:title="ECH">
+        <SwitchPreference
+            app:icon="@drawable/ic_baseline_security_24"
+            app:key="enableECH"
+            app:title="@string/enable" />
+        <EditTextPreference
+            app:icon="@drawable/ic_baseline_nfc_24"
             app:key="echConfig"
             app:title="@string/ech_config"
             app:useSimpleSummaryProvider="true" />