diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AngApplication.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AngApplication.kt
index e2fe19f6..6416d201 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AngApplication.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AngApplication.kt
@@ -4,6 +4,7 @@ import android.content.Context
 import androidx.multidex.MultiDexApplication
 import androidx.work.Configuration
 import com.tencent.mmkv.MMKV
+import com.v2ray.ang.util.Utils
 
 class AngApplication : MultiDexApplication(), Configuration.Provider {
     companion object {
@@ -31,6 +32,8 @@ class AngApplication : MultiDexApplication(), Configuration.Provider {
 
         //Logger.init().logLevel(if (BuildConfig.DEBUG) LogLevel.FULL else LogLevel.NONE)
         MMKV.initialize(this)
+
+        Utils.setNightMode(application)
     }
 
     override fun getWorkManagerConfiguration(): Configuration {
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AppConfig.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AppConfig.kt
index c148294b..996e3763 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AppConfig.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/AppConfig.kt
@@ -49,6 +49,7 @@ object AppConfig {
     const val PREF_CONFIRM_REMOVE = "pref_confirm_remove"
     const val PREF_START_SCAN_IMMEDIATE = "pref_start_scan_immediate"
     const val PREF_LANGUAGE = "pref_language"
+    const val PREF_UI_MODE_NIGHT = "pref_ui_mode_night"
 
     const val PREF_PREFER_IPV6 = "pref_prefer_ipv6"
     const val PREF_PROXY_SHARING = "pref_proxy_sharing_enabled"
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SettingsActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SettingsActivity.kt
index 79c9d5c0..691320c5 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SettingsActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SettingsActivity.kt
@@ -68,52 +68,11 @@ class SettingsActivity : BaseActivity() {
         override fun onCreatePreferences(bundle: Bundle?, s: String?) {
             addPreferencesFromResource(R.xml.pref_settings)
 
-            routingCustom?.setOnPreferenceClickListener {
-                startActivity(Intent(activity, RoutingSettingsActivity::class.java))
-                false
-            }
-
-            autoUpdateCheck?.setOnPreferenceChangeListener { _, newValue ->
-                val value = newValue as Boolean
-                autoUpdateCheck?.isChecked = value
-                autoUpdateInterval?.isEnabled = value
-                autoUpdateInterval?.text?.toLong()?.let {
-                    if (newValue) configureUpdateTask(it) else cancelUpdateTask()
-                }
-                true
-            }
-
-            autoUpdateInterval?.setOnPreferenceChangeListener { _, any ->
-                var nval = any as String
-
-                // It must be greater than 15 minutes because WorkManager couldn't run tasks under 15 minutes intervals
-                nval =
-                    if (TextUtils.isEmpty(nval) || nval.toLong() < 15) AppConfig.SUBSCRIPTION_DEFAULT_UPDATE_INTERVAL else nval
-                autoUpdateInterval?.summary = nval
-                configureUpdateTask(nval.toLong())
-                true
-            }
-
-
             perAppProxy?.setOnPreferenceClickListener {
                 startActivity(Intent(activity, PerAppProxyActivity::class.java))
                 perAppProxy?.isChecked = true
                 false
             }
-
-            remoteDns?.setOnPreferenceChangeListener { _, any ->
-                // remoteDns.summary = any as String
-                val nval = any as String
-                remoteDns?.summary = if (nval == "") AppConfig.DNS_PROXY else nval
-                true
-            }
-            domesticDns?.setOnPreferenceChangeListener { _, any ->
-                // domesticDns.summary = any as String
-                val nval = any as String
-                domesticDns?.summary = if (nval == "") AppConfig.DNS_DIRECT else nval
-                true
-            }
-
             localDns?.setOnPreferenceChangeListener { _, any ->
                 updateLocalDns(any as Boolean)
                 true
@@ -128,22 +87,12 @@ class SettingsActivity : BaseActivity() {
                 vpnDns?.summary = any as String
                 true
             }
-            socksPort?.setOnPreferenceChangeListener { _, any ->
-                val nval = any as String
-                socksPort?.summary = if (TextUtils.isEmpty(nval)) AppConfig.PORT_SOCKS else nval
-                true
+
+            routingCustom?.setOnPreferenceClickListener {
+                startActivity(Intent(activity, RoutingSettingsActivity::class.java))
+                false
             }
-            httpPort?.setOnPreferenceChangeListener { _, any ->
-                val nval = any as String
-                httpPort?.summary = if (TextUtils.isEmpty(nval)) AppConfig.PORT_HTTP else nval
-                true
-            }
-            mode?.setOnPreferenceChangeListener { _, newValue ->
-                updateMode(newValue.toString())
-                true
-            }
-            mode?.dialogLayoutResource = R.layout.preference_with_help_link
-            //loglevel.summary = "LogLevel"
+
             mux?.setOnPreferenceChangeListener { _, newValue ->
                 updateMux(newValue as Boolean)
                 true
@@ -173,6 +122,56 @@ class SettingsActivity : BaseActivity() {
                 updateFragmentInterval(newValue as String)
                 true
             }
+
+            autoUpdateCheck?.setOnPreferenceChangeListener { _, newValue ->
+                val value = newValue as Boolean
+                autoUpdateCheck?.isChecked = value
+                autoUpdateInterval?.isEnabled = value
+                autoUpdateInterval?.text?.toLong()?.let {
+                    if (newValue) configureUpdateTask(it) else cancelUpdateTask()
+                }
+                true
+            }
+            autoUpdateInterval?.setOnPreferenceChangeListener { _, any ->
+                var nval = any as String
+
+                // It must be greater than 15 minutes because WorkManager couldn't run tasks under 15 minutes intervals
+                nval =
+                    if (TextUtils.isEmpty(nval) || nval.toLong() < 15) AppConfig.SUBSCRIPTION_DEFAULT_UPDATE_INTERVAL else nval
+                autoUpdateInterval?.summary = nval
+                configureUpdateTask(nval.toLong())
+                true
+            }
+
+            remoteDns?.setOnPreferenceChangeListener { _, any ->
+                // remoteDns.summary = any as String
+                val nval = any as String
+                remoteDns?.summary = if (nval == "") AppConfig.DNS_PROXY else nval
+                true
+            }
+            domesticDns?.setOnPreferenceChangeListener { _, any ->
+                // domesticDns.summary = any as String
+                val nval = any as String
+                domesticDns?.summary = if (nval == "") AppConfig.DNS_DIRECT else nval
+                true
+            }
+            socksPort?.setOnPreferenceChangeListener { _, any ->
+                val nval = any as String
+                socksPort?.summary = if (TextUtils.isEmpty(nval)) AppConfig.PORT_SOCKS else nval
+                true
+            }
+            httpPort?.setOnPreferenceChangeListener { _, any ->
+                val nval = any as String
+                httpPort?.summary = if (TextUtils.isEmpty(nval)) AppConfig.PORT_HTTP else nval
+                true
+            }
+            mode?.setOnPreferenceChangeListener { _, newValue ->
+                updateMode(newValue.toString())
+                true
+            }
+            mode?.dialogLayoutResource = R.layout.preference_with_help_link
+            //loglevel.summary = "LogLevel"
+
         }
 
         override fun onStart() {
@@ -249,6 +248,7 @@ class SettingsActivity : BaseActivity() {
                 AppConfig.PREF_MUX_XUDP_QUIC,
                 AppConfig.PREF_FRAGMENT_PACKETS,
                 AppConfig.PREF_LANGUAGE,
+                AppConfig.PREF_UI_MODE_NIGHT,
                 AppConfig.PREF_LOGLEVEL,
                 AppConfig.PREF_MODE
             ).forEach { key ->
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt
index 6b051008..ccccf44f 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/util/Utils.kt
@@ -16,6 +16,7 @@ import android.util.Base64
 import android.util.Log
 import android.util.Patterns
 import android.webkit.URLUtil
+import androidx.appcompat.app.AppCompatDelegate
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
 import com.v2ray.ang.AppConfig.ANG_PACKAGE
@@ -371,6 +372,14 @@ object Utils {
         return mode != UI_MODE_NIGHT_NO
     }
 
+    fun setNightMode(context: Context) {
+        when (settingsStorage?.decodeString(AppConfig.PREF_UI_MODE_NIGHT, "0")) {
+            "0" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
+            "1" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO)
+            "2" -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES)
+        }
+    }
+
     fun getIpv6Address(address: String): String {
         return if (isIpv6Address(address) && !address.contains('[') && !address.contains(']')) {
             String.format("[%s]", address)
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/viewmodel/SettingsViewModel.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/viewmodel/SettingsViewModel.kt
index d112dd36..9fbbdcfb 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/viewmodel/SettingsViewModel.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/viewmodel/SettingsViewModel.kt
@@ -8,24 +8,33 @@ import androidx.preference.PreferenceManager
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
 import com.v2ray.ang.util.MmkvManager
+import com.v2ray.ang.util.Utils
 
-class SettingsViewModel(application: Application) : AndroidViewModel(application), SharedPreferences.OnSharedPreferenceChangeListener {
+class SettingsViewModel(application: Application) : AndroidViewModel(application),
+    SharedPreferences.OnSharedPreferenceChangeListener {
 
-    private val settingsStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_SETTING, MMKV.MULTI_PROCESS_MODE) }
+    private val settingsStorage by lazy {
+        MMKV.mmkvWithID(
+            MmkvManager.ID_SETTING,
+            MMKV.MULTI_PROCESS_MODE
+        )
+    }
 
     fun startListenPreferenceChange() {
-        PreferenceManager.getDefaultSharedPreferences(getApplication()).registerOnSharedPreferenceChangeListener(this)
+        PreferenceManager.getDefaultSharedPreferences(getApplication())
+            .registerOnSharedPreferenceChangeListener(this)
     }
 
     override fun onCleared() {
-        PreferenceManager.getDefaultSharedPreferences(getApplication()).unregisterOnSharedPreferenceChangeListener(this)
+        PreferenceManager.getDefaultSharedPreferences(getApplication())
+            .unregisterOnSharedPreferenceChangeListener(this)
         Log.i(AppConfig.ANG_PACKAGE, "Settings ViewModel is cleared")
         super.onCleared()
     }
 
     override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String?) {
         Log.d(AppConfig.ANG_PACKAGE, "Observe settings changed: $key")
-        when(key) {
+        when (key) {
             AppConfig.PREF_MODE,
             AppConfig.PREF_VPN_DNS,
             AppConfig.PREF_REMOTE_DNS,
@@ -35,6 +44,7 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
             AppConfig.PREF_HTTP_PORT,
             AppConfig.PREF_LOGLEVEL,
             AppConfig.PREF_LANGUAGE,
+            AppConfig.PREF_UI_MODE_NIGHT,
             AppConfig.PREF_ROUTING_DOMAIN_STRATEGY,
             AppConfig.PREF_ROUTING_MODE,
             AppConfig.PREF_V2RAY_ROUTING_AGENT,
@@ -44,9 +54,11 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
             AppConfig.PREF_FRAGMENT_PACKETS,
             AppConfig.PREF_FRAGMENT_LENGTH,
             AppConfig.PREF_FRAGMENT_INTERVAL,
-            AppConfig.PREF_MUX_XUDP_QUIC, -> {
+            AppConfig.PREF_MUX_XUDP_QUIC,
+            -> {
                 settingsStorage?.encode(key, sharedPreferences.getString(key, ""))
             }
+
             AppConfig.PREF_SPEED_ENABLED,
             AppConfig.PREF_PROXY_SHARING,
             AppConfig.PREF_LOCAL_DNS_ENABLED,
@@ -59,19 +71,29 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
             AppConfig.PREF_START_SCAN_IMMEDIATE,
             AppConfig.SUBSCRIPTION_AUTO_UPDATE,
             AppConfig.PREF_FRAGMENT_ENABLED,
-            AppConfig.PREF_MUX_ENABLED, -> {
+            AppConfig.PREF_MUX_ENABLED,
+            -> {
                 settingsStorage?.encode(key, sharedPreferences.getBoolean(key, false))
             }
+
             AppConfig.PREF_SNIFFING_ENABLED -> {
                 settingsStorage?.encode(key, sharedPreferences.getBoolean(key, true))
             }
+
             AppConfig.PREF_MUX_CONCURRENCY,
             AppConfig.PREF_MUX_XUDP_CONCURRENCY -> {
-                settingsStorage?.encode(key, sharedPreferences.getString(key, "8")?.toIntOrNull() ?: 8)
+                settingsStorage?.encode(
+                    key,
+                    sharedPreferences.getString(key, "8")?.toIntOrNull() ?: 8
+                )
             }
+
             AppConfig.PREF_PER_APP_PROXY_SET -> {
                 settingsStorage?.encode(key, sharedPreferences.getStringSet(key, setOf()))
             }
         }
+        if (key == AppConfig.PREF_UI_MODE_NIGHT) {
+            Utils.setNightMode(getApplication())
+        }
     }
 }
diff --git a/V2rayNG/app/src/main/res/values-ar/strings.xml b/V2rayNG/app/src/main/res/values-ar/strings.xml
index 5a1ef352..d772631b 100644
--- a/V2rayNG/app/src/main/res/values-ar/strings.xml
+++ b/V2rayNG/app/src/main/res/values-ar/strings.xml
@@ -163,6 +163,7 @@
 	<string name="title_mode_help">انقر علي للمزيد من المساعدة</string>
 	<string name="title_language">اللغة</string>
 	<string name="title_ui_settings">إعدادات واجهة المستخدم</string>
+	<string name="title_pref_ui_mode_night">UI mode settings</string>
 	<string name="title_logcat">Logcat</string>
 	<string name="logcat_copy">نسخ</string>
 	<string name="logcat_clear">مسح</string>
@@ -230,4 +231,10 @@
 	</string-array>
     <string name="menu_item_add_asset">يضيف</string>
 	<string name="menu_item_add_url">إضافة رابط</string>
+
+	<string-array name="ui_mode_night">
+		<item>Follow system</item>
+		<item>Light</item>
+		<item>Dark</item>
+	</string-array>
 </resources>
diff --git a/V2rayNG/app/src/main/res/values-fa/strings.xml b/V2rayNG/app/src/main/res/values-fa/strings.xml
index cb9edb67..8056fe4e 100644
--- a/V2rayNG/app/src/main/res/values-fa/strings.xml
+++ b/V2rayNG/app/src/main/res/values-fa/strings.xml
@@ -188,6 +188,7 @@
     <string name="title_mode_help">برای راهنمایی بیشتر روی این متن، کلیک کنید</string>
     <string name="title_language">زبان</string>
     <string name="title_ui_settings">تنظیمات رابط کاربری</string>
+    <string name="title_pref_ui_mode_night">UI mode settings</string>
 
     <string name="title_logcat">گزارشات</string>
     <string name="logcat_copy">کپی</string>
@@ -270,4 +271,10 @@
     <string name="menu_item_add_asset">افزودن</string>
     <string name="menu_item_add_url">افزودن لینک</string>
 
+    <string-array name="ui_mode_night">
+        <item>Follow system</item>
+        <item>Light</item>
+        <item>Dark</item>
+    </string-array>
+
 </resources>
diff --git a/V2rayNG/app/src/main/res/values-ru/strings.xml b/V2rayNG/app/src/main/res/values-ru/strings.xml
index 21458bd2..820eb8dd 100644
--- a/V2rayNG/app/src/main/res/values-ru/strings.xml
+++ b/V2rayNG/app/src/main/res/values-ru/strings.xml
@@ -192,6 +192,7 @@
     <string name="title_mode_help">Нажмите для получения дополнительной информации</string>
     <string name="title_language">Язык</string>
     <string name="title_ui_settings">Настройки интерфейса</string>
+    <string name="title_pref_ui_mode_night">UI mode settings</string>
 
     <string name="title_logcat">Журнал</string>
     <string name="logcat_copy">Копировать</string>
@@ -273,4 +274,10 @@
         <item>Только прокси</item>
     </string-array>
 
+    <string-array name="ui_mode_night">
+        <item>Follow system</item>
+        <item>Light</item>
+        <item>Dark</item>
+    </string-array>
+
 </resources>
diff --git a/V2rayNG/app/src/main/res/values-vi/strings.xml b/V2rayNG/app/src/main/res/values-vi/strings.xml
index 047aef2b..eaa8f37a 100644
--- a/V2rayNG/app/src/main/res/values-vi/strings.xml
+++ b/V2rayNG/app/src/main/res/values-vi/strings.xml
@@ -191,6 +191,7 @@
     <string name="title_mode_help">Nhấn vào đây nếu bạn cần trợ giúp!</string>
     <string name="title_language">Ngôn ngữ</string>
     <string name="title_ui_settings">Cài đặt giao diện</string>
+    <string name="title_pref_ui_mode_night">UI mode settings</string>
 
     <string name="title_logcat">Logcat</string>
     <string name="logcat_copy">Sao chép</string>
@@ -269,4 +270,10 @@
     <string name="menu_item_add_asset">Thêm vào</string>
     <string name="menu_item_add_url">Thêm liên kết</string>
 
+    <string-array name="ui_mode_night">
+        <item>Follow system</item>
+        <item>Light</item>
+        <item>Dark</item>
+    </string-array>
+
 </resources>
diff --git a/V2rayNG/app/src/main/res/values-zh-rCN/strings.xml b/V2rayNG/app/src/main/res/values-zh-rCN/strings.xml
index a40135ea..b7627d46 100644
--- a/V2rayNG/app/src/main/res/values-zh-rCN/strings.xml
+++ b/V2rayNG/app/src/main/res/values-zh-rCN/strings.xml
@@ -190,6 +190,7 @@
     <string name="title_mode_help">点此查看更多帮助</string>
     <string name="title_language">语言</string>
     <string name="title_ui_settings">用户界面设置</string>
+    <string name="title_pref_ui_mode_night">界面颜色设置</string>
 
     <string name="title_logcat">Logcat</string>
     <string name="logcat_copy">复制</string>
@@ -274,4 +275,10 @@
         <item>仅代理</item>
     </string-array>
 
+    <string-array name="ui_mode_night">
+        <item>跟随系统</item>
+        <item>浅色</item>
+        <item>深色</item>
+    </string-array>
+
 </resources>
diff --git a/V2rayNG/app/src/main/res/values-zh-rTW/strings.xml b/V2rayNG/app/src/main/res/values-zh-rTW/strings.xml
index 5ac04f3e..c0a69c31 100644
--- a/V2rayNG/app/src/main/res/values-zh-rTW/strings.xml
+++ b/V2rayNG/app/src/main/res/values-zh-rTW/strings.xml
@@ -189,7 +189,8 @@
     <string name="title_mode">模式</string>
     <string name="title_mode_help">輕觸以檢視說明</string>
     <string name="title_language">語言</string>
-    <string name="title_ui_settings">使用者介面設定</string>
+    <string name="title_ui_settings">介面顏色設定</string>
+    <string name="title_pref_ui_mode_night">UI mode settings</string>
 
     <string name="title_logcat">Logcat</string>
     <string name="logcat_copy">複製</string>
@@ -273,4 +274,10 @@
         <item>僅 Proxy</item>
     </string-array>
 
+    <string-array name="ui_mode_night">
+        <item>跟隨系統</item>
+        <item>淺色</item>
+        <item>深色</item>
+    </string-array>
+
 </resources>
diff --git a/V2rayNG/app/src/main/res/values/arrays.xml b/V2rayNG/app/src/main/res/values/arrays.xml
index 861200e3..b5eef4df 100644
--- a/V2rayNG/app/src/main/res/values/arrays.xml
+++ b/V2rayNG/app/src/main/res/values/arrays.xml
@@ -196,4 +196,10 @@
         <item>allow</item>
         <item>skip</item>
     </string-array>
-</resources>
+
+    <string-array name="ui_mode_night_value" translatable="false">
+        <item>0</item>
+        <item>1</item>
+        <item>2</item>
+    </string-array>
+</resources>
\ No newline at end of file
diff --git a/V2rayNG/app/src/main/res/values/strings.xml b/V2rayNG/app/src/main/res/values/strings.xml
index a15db1c2..be8cdcb9 100644
--- a/V2rayNG/app/src/main/res/values/strings.xml
+++ b/V2rayNG/app/src/main/res/values/strings.xml
@@ -203,6 +203,7 @@
     <string name="title_mode_help">Click me for more help</string>
     <string name="title_language">Language</string>
     <string name="title_ui_settings">UI settings</string>
+    <string name="title_pref_ui_mode_night">UI mode settings</string>
 
     <string name="title_logcat">Logcat</string>
     <string name="logcat_copy">Copy</string>
@@ -284,4 +285,10 @@
         <item>Proxy only</item>
     </string-array>
 
+    <string-array name="ui_mode_night">
+        <item>Follow system</item>
+        <item>Light</item>
+        <item>Dark</item>
+    </string-array>
+
 </resources>
diff --git a/V2rayNG/app/src/main/res/xml/pref_settings.xml b/V2rayNG/app/src/main/res/xml/pref_settings.xml
index 6d6d5757..36c7b5da 100644
--- a/V2rayNG/app/src/main/res/xml/pref_settings.xml
+++ b/V2rayNG/app/src/main/res/xml/pref_settings.xml
@@ -146,6 +146,13 @@
             android:summary="%s"
             android:title="@string/title_language" />
 
+        <ListPreference
+            android:defaultValue="0"
+            android:entries="@array/ui_mode_night"
+            android:entryValues="@array/ui_mode_night_value"
+            android:key="pref_ui_mode_night"
+            android:summary="%s"
+            android:title="@string/title_pref_ui_mode_night" />
     </PreferenceCategory>
 
     <PreferenceCategory android:title="@string/title_advanced">