diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/Controllers.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/Controllers.java
index 4993bb7019..dbb1338f53 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/Controllers.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/Controllers.java
@@ -192,6 +192,18 @@ public static void prepareDownloadPage() {
         }
     }
 
+    public static void resetPages() {
+        versionPage = null;
+        downloadPage = null;
+        settingsPage = null;
+
+        rootPage.reset();
+        terracottaPage.reset();
+        accountListPage.reset();
+        gameListPage.reset();
+        getDecorator().setRoot(rootPage.get());
+    }
+
     // FXThread
     public static Node getTerracottaPage() {
         return terracottaPage.get();
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/Navigator.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/Navigator.java
index 6d0f8f8010..f8ed08c195 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/Navigator.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/Navigator.java
@@ -215,6 +215,10 @@ protected void invalidated() {
         }
     };
 
+    public void setRoot(Node node) {
+        stack.set(0, node);
+    }
+
     public static final class NavigationEvent extends Event {
         public static final EventType<NavigationEvent> EXITED = new EventType<>("EXITED");
         public static final EventType<NavigationEvent> NAVIGATED = new EventType<>("NAVIGATED");
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorController.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorController.java
index 64601aa68c..b5604f2c91 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorController.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorController.java
@@ -363,6 +363,10 @@ private Image loadDefaultBackgroundImage() {
 
     // ==== Navigation ====
 
+    public void setRoot(Node node) {
+        navigator.setRoot(node);
+    }
+
     public void navigate(Node node, AnimationProducer animationProducer, Duration duration, Interpolator interpolator) {
         navigator.navigate(node, animationProducer, duration, interpolator);
     }
@@ -379,7 +383,7 @@ private void close() {
         navigator.clear();
     }
 
-    private void back() {
+    public void back() {
         if (navigator.getCurrentPage() instanceof DecoratorPage) {
             DecoratorPage page = (DecoratorPage) navigator.getCurrentPage();
 
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 4b9a5a405b..4e11f4fdce 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
@@ -256,10 +256,8 @@ public SettingsPage() {
 
                 VBox left = new VBox();
                 Label title = new Label(i18n("settings.launcher.language"));
-                title.getStyleClass().add("title");
-                Label subtitle = new Label(i18n("settings.take_effect_after_restart"));
-                subtitle.getStyleClass().add("subtitle");
-                left.getChildren().setAll(title, subtitle);
+                left.getChildren().setAll(title);
+                left.setAlignment(Pos.CENTER_LEFT);
                 languagePane.setLeft(left);
 
                 SupportedLocale currentLocale = I18n.getLocale();
@@ -274,6 +272,11 @@ else if (locale.isSameLanguage(currentLocale))
                 }));
                 cboLanguage.getItems().setAll(SupportedLocale.getSupportedLocales());
                 selectedItemPropertyFor(cboLanguage).bindBidirectional(config().localizationProperty());
+                selectedItemPropertyFor(cboLanguage).addListener((observable, oldValue, newValue) -> {
+                    I18n.setLocale(newValue);
+                    Controllers.resetPages();
+                    Controllers.getDecorator().back();
+                });
 
                 FXUtils.setLimitWidth(cboLanguage, 300);
                 languagePane.setRight(cboLanguage);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/util/Lazy.java b/HMCL/src/main/java/org/jackhuang/hmcl/util/Lazy.java
index dacdea2d3a..a6bd427b81 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/util/Lazy.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/util/Lazy.java
@@ -26,7 +26,7 @@
  * @param <T> value type
  */
 public final class Lazy<T> {
-    private Supplier<T> supplier;
+    private final Supplier<T> supplier;
     private T value = null;
 
     public Lazy(Supplier<T> supplier) {
@@ -34,10 +34,13 @@ public Lazy(Supplier<T> supplier) {
     }
 
     public T get() {
-        if (supplier != null) {
+        if (value == null) {
             value = supplier.get();
-            supplier = null;
         }
         return value;
     }
+
+    public void reset() {
+        value = null;
+    }
 }