diff --git a/src/main/java/org/jcnc/jnotepad/api/core/views/manager/builder/SideBarButtonBuilder.java b/src/main/java/org/jcnc/jnotepad/api/core/views/manager/builder/SideBarButtonBuilder.java
index c77cad6..25fbf63 100644
--- a/src/main/java/org/jcnc/jnotepad/api/core/views/manager/builder/SideBarButtonBuilder.java
+++ b/src/main/java/org/jcnc/jnotepad/api/core/views/manager/builder/SideBarButtonBuilder.java
@@ -18,8 +18,8 @@ public class SideBarButtonBuilder {
     private EventHandler<ActionEvent> eventHandler;
 
     public Button build() {
-        Optional<Button> container = Optional.of(new Button());
-        button = container.get();
+        Optional<Button> container = Optional.ofNullable(button);
+        button = container.orElseGet(Button::new);
         button.setGraphic(imageView);
         button.setOnAction(eventHandler);
         return button;
@@ -31,9 +31,9 @@ public class SideBarButtonBuilder {
     }
 
     public SideBarButtonBuilder setButtonEssentialAttribute(Double relativelyPrefWidth, Double relativelyPrefHeight) {
-        Optional<Double> container = Optional.of(relativelyPrefHeight);
+        Optional<Double> container = Optional.ofNullable(relativelyPrefHeight);
         button.setPrefWidth(imageView.getFitWidth() + container.orElse(20D));
-        container = Optional.of(relativelyPrefWidth);
+        container = Optional.ofNullable(relativelyPrefWidth);
         button.setPrefHeight(imageView.getFitHeight() + container.orElse(20D));
         return this;
     }
diff --git a/src/main/java/org/jcnc/jnotepad/app/manager/ApplicationManager.java b/src/main/java/org/jcnc/jnotepad/app/manager/ApplicationManager.java
index 17a6c2a..4808e31 100644
--- a/src/main/java/org/jcnc/jnotepad/app/manager/ApplicationManager.java
+++ b/src/main/java/org/jcnc/jnotepad/app/manager/ApplicationManager.java
@@ -15,7 +15,6 @@ import org.jcnc.jnotepad.common.manager.ThreadPoolManager;
 import org.jcnc.jnotepad.controller.ResourceController;
 import org.jcnc.jnotepad.controller.cache.CacheController;
 import org.jcnc.jnotepad.controller.config.PluginConfigController;
-import org.jcnc.jnotepad.controller.config.UserConfigController;
 import org.jcnc.jnotepad.controller.manager.Controller;
 import org.jcnc.jnotepad.plugin.manager.PluginManager;
 import org.jcnc.jnotepad.util.LogUtil;
@@ -140,8 +139,7 @@ public class ApplicationManager {
         // 刷新插件配置文件
         pluginConfigController.getConfig().setPlugins(PluginManager.getInstance().getPluginDescriptors());
         pluginConfigController.writeConfig();
-        // 保存配置文件
-        UserConfigController.getInstance().writeConfig();
+
         // 销毁插件可能申请的资源
         PluginManager.getInstance().destroyPlugins();
         // 保存已打开的文件标签页
diff --git a/src/main/java/org/jcnc/jnotepad/component/stage/setting/SetStage.java b/src/main/java/org/jcnc/jnotepad/component/stage/setting/SetStage.java
index 6808831..e9b2825 100644
--- a/src/main/java/org/jcnc/jnotepad/component/stage/setting/SetStage.java
+++ b/src/main/java/org/jcnc/jnotepad/component/stage/setting/SetStage.java
@@ -16,9 +16,22 @@ import javafx.scene.text.Font;
 import javafx.scene.text.Text;
 import javafx.stage.Modality;
 import javafx.stage.Stage;
+import org.jcnc.jnotepad.app.config.AppConfig;
+import org.jcnc.jnotepad.app.i18n.UiResourceBundle;
+import org.jcnc.jnotepad.app.manager.ApplicationManager;
+import org.jcnc.jnotepad.common.constants.TextConstants;
+import org.jcnc.jnotepad.common.manager.ApplicationCacheManager;
+import org.jcnc.jnotepad.component.stage.dialog.factory.impl.BasicDirectoryChooserFactory;
+import org.jcnc.jnotepad.controller.config.AppConfigController;
+import org.jcnc.jnotepad.controller.event.handler.menuitem.OpenDirectory;
+import org.jcnc.jnotepad.model.entity.Cache;
+import org.jcnc.jnotepad.model.enums.CacheExpirationTime;
 import org.jcnc.jnotepad.plugin.PluginManagerInterface;
+import org.jcnc.jnotepad.util.PopUpUtil;
 import org.jcnc.jnotepad.util.UiUtil;
 
+import java.io.File;
+
 import static org.jcnc.jnotepad.common.constants.AppConstants.SCREEN_LENGTH;
 import static org.jcnc.jnotepad.common.constants.AppConstants.SCREEN_WIDTH;
 
@@ -42,6 +55,8 @@ public class SetStage extends Stage {
     private static SetStage instance;
     private StackPane contentDisplay;
 
+    private final ApplicationCacheManager cacheManager = ApplicationCacheManager.getInstance();
+
     /**
      * 私有构造方法以实现单例模式。
      */
@@ -202,8 +217,6 @@ public class SetStage extends Stage {
             DeveloperDebugStage debugPage = new DeveloperDebugStage();
             debugPage.start(new Stage());
         });
-
-
         generalLayout.getChildren().addAll(devBox);
 
         return generalLayout;
@@ -218,23 +231,50 @@ public class SetStage extends Stage {
         VBox generalLayout = new VBox(10);
         generalLayout.setPadding(new Insets(25));
 
-        var hBox=new HBox(5);
+        var hBox = new HBox(5);
 
-        var fileChooseText =new Text("路径选择: ");
+        var fileChooseText = new Text("文件根路径: ");
         fileChooseText.setFont(new Font(18));
-
-        var fileChoose =new CustomTextField("");
+        AppConfig config = AppConfigController.getInstance().getConfig();
+        var fileChoose = new CustomTextField(config.getRootPath());
         fileChoose.getStyleClass().add(Styles.SMALL);
         fileChoose.setPrefWidth(420);
 
-        var fileChooseBtn =new Button();
+        var fileChooseBtn = new Button();
         fileChooseBtn.setText("选择文件夹");
         fileChooseBtn.getStyleClass().addAll(Styles.SMALL);
+        BasicDirectoryChooserFactory directoryChooserFactory = BasicDirectoryChooserFactory.getInstance();
         fileChooseBtn.setOnAction(event -> {
-            // TODO: 2023/10/4 选择文件
+            // 获取打开目录缓存
+            Cache cache = cacheManager.getCache(OpenDirectory.GROUP, "openDirectory");
 
+            File file = directoryChooserFactory.createDirectoryChooser(
+                            UiResourceBundle.getContent(TextConstants.OPEN),
+                            cache == null ? null : new File((String) cache.getCacheData()))
+                    .showDialog(UiUtil.getAppWindow());
+            if (file == null) {
+                return;
+            }
+            if (file.equals(new File(config.getRootPath()))) {
+                PopUpUtil.errorAlert("错误", "路径不能和默认路径相同", "请重新选择路径", null, null);
+                return;
+            }
+            // 设置缓存
+            if (cache == null) {
+                cacheManager.addCache(cacheManager.createCache(OpenDirectory.GROUP, "openDirectory", file.getAbsolutePath(), CacheExpirationTime.NEVER_EXPIRES.getValue()));
+            } else {
+                cache.setCacheData(file.getParent());
+                cacheManager.addCache(cache);
+            }
+            config.setRootPath(file.getAbsolutePath());
+            PopUpUtil.questionAlert("更改", "设置程序文件根路径", "设置成功，请重启程序以应用路径更改!", appDialog -> {
+                appDialog.close();
+                ApplicationManager.getInstance().restart();
+            }, null, "重启", "以后再说");
+            Stage stage = (Stage) fileChooseBtn.getScene().getWindow();
+            stage.close();
         });
-        hBox.getChildren().addAll(fileChooseText,fileChoose,fileChooseBtn);
+        hBox.getChildren().addAll(fileChooseText, fileChoose, fileChooseBtn);
 
         generalLayout.getChildren().addAll(hBox);
 
diff --git a/src/main/java/org/jcnc/jnotepad/util/FileUtil.java b/src/main/java/org/jcnc/jnotepad/util/FileUtil.java
index c68e316..aefab59 100644
--- a/src/main/java/org/jcnc/jnotepad/util/FileUtil.java
+++ b/src/main/java/org/jcnc/jnotepad/util/FileUtil.java
@@ -9,7 +9,9 @@ import java.io.*;
 import java.nio.ByteBuffer;
 import java.nio.channels.FileChannel;
 import java.nio.charset.Charset;
+import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
@@ -157,7 +159,42 @@ public class FileUtil {
                 }
             }
         }
-
         return dirFileModel;
     }
+
+    /**
+     * 文件夹迁移
+     *
+     * @param sourceFolder 源文件夹
+     * @param targetFolder 目标文件夹
+     * @since 2023/10/5 12:18
+     */
+
+    private static void migrateFolder(File sourceFolder, File targetFolder) {
+        // 创建目标文件夹
+        targetFolder.mkdirs();
+
+        // 获取源文件夹中的所有文件和文件夹
+        File[] files = sourceFolder.listFiles();
+
+        if (files != null) {
+            // 遍历源文件夹中的每个文件和文件夹
+            for (File file : files) {
+                if (file.isDirectory()) {
+                    // 如果是文件夹，递归调用自身进行迁移
+                    migrateFolder(file, new File(targetFolder, file.getName()));
+                } else {
+                    // 如果是文件，将文件复制到目标文件夹中
+                    Path sourceFilePath = file.toPath();
+                    Path targetFilePath = new File(targetFolder, file.getName()).toPath();
+                    try {
+                        Files.copy(sourceFilePath, targetFilePath, StandardCopyOption.REPLACE_EXISTING);
+                    } catch (IOException e) {
+                        throw new AppException(e);
+                    }
+                }
+            }
+        }
+    }
+
 }