diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/main/SettingsPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/main/SettingsPage.java
index 692b1378e..bb13246d4 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/main/SettingsPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/main/SettingsPage.java
@@ -17,6 +17,7 @@
  */
 package org.jackhuang.hmcl.ui.main;
 
+import com.jfoenix.controls.JFXButton;
 import javafx.application.Platform;
 import javafx.beans.InvalidationListener;
 import javafx.beans.WeakInvalidationListener;
@@ -32,10 +33,12 @@ import org.jackhuang.hmcl.upgrade.RemoteVersion;
 import org.jackhuang.hmcl.upgrade.UpdateChannel;
 import org.jackhuang.hmcl.upgrade.UpdateChecker;
 import org.jackhuang.hmcl.upgrade.UpdateHandler;
+import org.jackhuang.hmcl.util.Restarter;
 import org.jackhuang.hmcl.util.StringUtils;
 import org.jackhuang.hmcl.util.i18n.Locales;
 import org.jackhuang.hmcl.util.io.FileUtils;
 import org.jackhuang.hmcl.util.io.IOUtils;
+import org.jackhuang.hmcl.util.logging.Level;
 import org.tukaani.xz.XZInputStream;
 
 import java.io.IOException;
@@ -61,6 +64,8 @@ public final class SettingsPage extends SettingsView {
 
     private InvalidationListener updateListener;
 
+    private boolean ignoreLanguageChange = false;
+
     public SettingsPage() {
         FXUtils.smoothScrolling(scroll);
 
@@ -68,6 +73,39 @@ public final class SettingsPage extends SettingsView {
         cboLanguage.getItems().setAll(Locales.LOCALES);
         selectedItemPropertyFor(cboLanguage).bindBidirectional(config().localizationProperty());
 
+        cboLanguage.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) -> {
+            if (ignoreLanguageChange) return;
+
+            if (oldValue != null && newValue != null && !oldValue.equals(newValue)) {
+                JFXButton restartButton = new JFXButton(i18n("button.restart"));
+                restartButton.getStyleClass().add("dialog-accept");
+                restartButton.setOnAction(e -> {
+                    try {
+                        Restarter.builder().restart();
+                    } catch (IOException ex) {
+                        LOG.log(Level.WARNING, "Failed to restart", ex);
+                        ignoreLanguageChange = true;
+                        cboLanguage.getSelectionModel().select(oldValue);
+                        ignoreLanguageChange = false;
+                    }
+                });
+
+                Runnable cancelAction = () -> {
+                    ignoreLanguageChange = true;
+                    cboLanguage.getSelectionModel().select(newValue);
+                    ignoreLanguageChange = false;
+                };
+
+                Controllers.confirmAction(
+                        i18n("settings.launcher.language.restart"),
+                        i18n("message.info"),
+                        MessageType.INFO,
+                        restartButton,
+                        cancelAction
+                );
+            }
+        });
+
         disableAutoGameOptionsPane.selectedProperty().bindBidirectional(config().disableAutoGameOptionsProperty());
         // ====
 
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/util/Restarter.java b/HMCL/src/main/java/org/jackhuang/hmcl/util/Restarter.java
new file mode 100644
index 000000000..fddc7f56c
--- /dev/null
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/util/Restarter.java
@@ -0,0 +1,105 @@
+/*
+ * Hello Minecraft! Launcher
+ * Copyright (C) 2020  huangyuhui <huanghongxun2008@126.com> and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.jackhuang.hmcl.util;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import org.jackhuang.hmcl.EntryPoint;
+import org.jackhuang.hmcl.java.JavaRuntime;
+import org.jackhuang.hmcl.util.io.JarUtils;
+
+/**
+ * <p>A common restart tool class, used for:</p>
+ * <ul>
+ *   <li>Restart after update</li>
+ *   <li>Restart after switching interface language</li>
+ *   <li>Any scenario that requires a restart to take effect</li>
+ * </ul>
+ */
+public final class Restarter {
+
+    private final List<String> jvmOptions = new ArrayList<>();
+    private final List<String> programArgs = new ArrayList<>();
+    private Path jarPath;
+
+    private Restarter() { }
+
+    public static Restarter builder() {
+        return new Restarter();
+    }
+
+    public Restarter addSystemProperty(String key, String value) {
+        jvmOptions.add("-D" + key + "=" + value);
+        return this;
+    }
+
+    public Restarter addProgramArguments(List<String> args) {
+        programArgs.addAll(args);
+        return this;
+    }
+
+    /**
+     * <p>
+     * Set the JAR path to start
+     * If not, the current running JAR will be used by default
+     * </p>
+     */
+    public Restarter setJarPath(Path jarPath) {
+        this.jarPath = jarPath;
+        return this;
+    }
+
+    public void restart() throws IOException {
+        Path jar = this.jarPath;
+        if (jar == null) {
+            jar = JarUtils.thisJarPath();
+        }
+        if (jar == null) {
+            throw new IOException("Cannot locate JAR file");
+        }
+
+        List<String> command = new ArrayList<>();
+        command.add(JavaRuntime.getDefault().getBinary().toString());
+
+        for (Map.Entry<Object, Object> e : System.getProperties().entrySet()) {
+            Object k = e.getKey();
+            if (k instanceof String && ((String) k).startsWith("hmcl.")) {
+                command.add("-D" + k + "=" + e.getValue());
+            }
+        }
+
+        command.addAll(jvmOptions);
+
+        command.add("-jar");
+        command.add(jar.toAbsolutePath().toString());
+
+        command.addAll(programArgs);
+
+        new ProcessBuilder(command)
+                .directory(new File(System.getProperty("user.dir")))
+                .inheritIO()
+                .start();
+
+        EntryPoint.exit(0);
+    }
+}
diff --git a/HMCL/src/main/resources/assets/lang/I18N.properties b/HMCL/src/main/resources/assets/lang/I18N.properties
index 56064f3d5..75654fd83 100644
--- a/HMCL/src/main/resources/assets/lang/I18N.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N.properties
@@ -195,6 +195,7 @@ button.save_as=Save As
 button.select_all=Select All
 button.view=View
 button.yes=Yes
+button.restart=Restart
 
 chat=Join Group Chat
 
@@ -1362,6 +1363,7 @@ settings.launcher.font.anti_aliasing.gray=Grayscale
 settings.launcher.font.anti_aliasing.lcd=Sub-pixel
 settings.launcher.general=General
 settings.launcher.language=Language (Applies After Restart)
+settings.launcher.language.restart=Changing the language requires restarting the launcher to take effect. Restart now?
 settings.launcher.launcher_log.export=Export Launcher Logs
 settings.launcher.launcher_log.export.failed=Failed to export logs.
 settings.launcher.launcher_log.export.success=Logs have been exported to "%s".
diff --git a/HMCL/src/main/resources/assets/lang/I18N_es.properties b/HMCL/src/main/resources/assets/lang/I18N_es.properties
index ee0700dc7..39c3b112d 100644
--- a/HMCL/src/main/resources/assets/lang/I18N_es.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N_es.properties
@@ -195,6 +195,7 @@ button.save_as=Guardar como
 button.select_all=Seleccionar todo
 button.view=Vista
 button.yes=Sí
+button.restart=Reiniciar
 
 chat=Chat de grupo
 
@@ -1358,6 +1359,7 @@ settings.launcher.font.anti_aliasing.gray=Escala de grises
 settings.launcher.font.anti_aliasing.lcd=Subpíxel
 settings.launcher.general=General
 settings.launcher.language=Idioma
+settings.launcher.language.restart=¿Reiniciar ahora? El cambio de idioma requiere reiniciar el launcher para que surta efecto.
 settings.launcher.launcher_log.export=Exportar registros del launcher
 settings.launcher.launcher_log.export.failed=No se han podido exportar los registros
 settings.launcher.launcher_log.export.success=Los registros se han exportado a «%s»
diff --git a/HMCL/src/main/resources/assets/lang/I18N_ja.properties b/HMCL/src/main/resources/assets/lang/I18N_ja.properties
index e5c9e5e78..d51d86c41 100644
--- a/HMCL/src/main/resources/assets/lang/I18N_ja.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N_ja.properties
@@ -156,6 +156,7 @@ button.save_as=名前を付けて保存
 button.select_all=すべて選択
 button.view=読む
 button.yes=はい
+button.restart=再起動
 
 chat=グループチャット
 
@@ -852,6 +853,7 @@ settings.launcher.enable_game_list=メインページにバージョンリスト
 settings.launcher.font=フォント
 settings.launcher.general=全般的
 settings.launcher.language=言語
+settings.launcher.language.restart=言語を変更するにはランチャーを再起動する必要があります。今すぐ再起動しますか？
 settings.launcher.launcher_log.export=ランチャーログのエクスポート
 settings.launcher.launcher_log.export.failed=ログのエクスポートに失敗しました
 settings.launcher.launcher_log.export.success=ログが %s にエクスポートされました
diff --git a/HMCL/src/main/resources/assets/lang/I18N_lzh.properties b/HMCL/src/main/resources/assets/lang/I18N_lzh.properties
index b117bf296..aa8007a32 100644
--- a/HMCL/src/main/resources/assets/lang/I18N_lzh.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N_lzh.properties
@@ -205,6 +205,7 @@ button.save_as=另存
 button.select_all=悉擇之
 button.view=覽
 button.yes=然
+button.restart=復啟
 
 chat=會集
 
diff --git a/HMCL/src/main/resources/assets/lang/I18N_ru.properties b/HMCL/src/main/resources/assets/lang/I18N_ru.properties
index 310a52a46..994923af5 100644
--- a/HMCL/src/main/resources/assets/lang/I18N_ru.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N_ru.properties
@@ -196,6 +196,7 @@ button.save_as=Сохранить как
 button.select_all=Выбрать все
 button.view=Просмотреть
 button.yes=Да
+button.restart=Перезагрузить
 
 chat=Групповой чат
 
@@ -1358,6 +1359,7 @@ settings.launcher.font.anti_aliasing.gray=Оттенки серого
 settings.launcher.font.anti_aliasing.lcd=Субпиксель
 settings.launcher.general=Общие
 settings.launcher.language=Язык (Применится после перезапуска)
+settings.launcher.language.restart=Для применения изменений языка требуется перезагрузка лаунчера. Перезагрузить сейчас?
 settings.launcher.launcher_log.export=Экспорт логов лаунчера
 settings.launcher.launcher_log.export.failed=Не удалось экспортировать логи
 settings.launcher.launcher_log.export.success=Логи экспортированы в %s
diff --git a/HMCL/src/main/resources/assets/lang/I18N_uk.properties b/HMCL/src/main/resources/assets/lang/I18N_uk.properties
index bf2a920e3..e4a3cf73e 100644
--- a/HMCL/src/main/resources/assets/lang/I18N_uk.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N_uk.properties
@@ -193,6 +193,7 @@ button.save_as=Зберегти як
 button.select_all=Вибрати все
 button.view=Переглянути
 button.yes=Так
+button.restart=Перезавантажити
 
 chat=Приєднатися до групового чату
 
@@ -1299,6 +1300,7 @@ settings.launcher.font.anti_aliasing.gray=Відтінки сірого
 settings.launcher.font.anti_aliasing.lcd=Субпіксельне
 settings.launcher.general=Загальні
 settings.launcher.language=Мова (Застосовується після перезавантаження)
+settings.launcher.language.restart=Для застосування зміни мови необхідно перезавантажити лаунчер. Перезавантажити зараз?
 settings.launcher.launcher_log.export=Експортувати журнали лаунчера
 settings.launcher.launcher_log.export.failed=Не вдалося експортувати журнали.
 settings.launcher.launcher_log.export.success=Журнали було експортовано до "%s".
diff --git a/HMCL/src/main/resources/assets/lang/I18N_zh.properties b/HMCL/src/main/resources/assets/lang/I18N_zh.properties
index d01764c5f..a550594fc 100644
--- a/HMCL/src/main/resources/assets/lang/I18N_zh.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N_zh.properties
@@ -198,6 +198,7 @@ button.save_as=另存新檔
 button.select_all=全選
 button.view=查看
 button.yes=是
+button.restart=重新啟動
 
 chat=官方群組
 
@@ -1150,6 +1151,7 @@ settings.launcher.font.anti_aliasing.gray=灰階
 settings.launcher.font.anti_aliasing.lcd=子像素
 settings.launcher.general=一般
 settings.launcher.language=語言 (重啟後生效)
+settings.launcher.language.restart=切換語言需要重新啟動啟動器才能生效。是否立即重新啟動？
 settings.launcher.launcher_log.export=匯出啟動器日誌
 settings.launcher.launcher_log.export.failed=無法匯出日誌。
 settings.launcher.launcher_log.export.success=日誌已儲存到「%s」。
diff --git a/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties b/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties
index 43603a3cb..c796249da 100644
--- a/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties
@@ -206,6 +206,7 @@ button.save_as=另存为
 button.select_all=全选
 button.view=查看
 button.yes=是
+button.restart=立即重启
 
 chat=官方群组
 
@@ -1161,6 +1162,7 @@ settings.launcher.font.anti_aliasing.gray=灰度
 settings.launcher.font.anti_aliasing.lcd=子像素
 settings.launcher.general=通用
 settings.launcher.language=语言 (重启后生效)
+settings.launcher.language.restart=切换语言需要重启启动器才能生效。是否立即重启？
 settings.launcher.launcher_log.export=导出启动器日志
 settings.launcher.launcher_log.export.failed=无法导出日志
 settings.launcher.launcher_log.export.success=日志已保存到“%s”