diff --git a/biji-houdaun/src/main/java/com/test/bijihoudaun/entity/TrashItemVo.java b/biji-houdaun/src/main/java/com/test/bijihoudaun/entity/TrashItemVo.java
index 91c8ad7..425f408 100644
--- a/biji-houdaun/src/main/java/com/test/bijihoudaun/entity/TrashItemVo.java
+++ b/biji-houdaun/src/main/java/com/test/bijihoudaun/entity/TrashItemVo.java
@@ -1,5 +1,6 @@
 package com.test.bijihoudaun.entity;
 
+import com.fasterxml.jackson.annotation.JsonFormat;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
@@ -19,6 +20,7 @@ public class TrashItemVo {
     private String type;
 
     @Schema(description = "删除时间")
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
     private Date deletedAt;
 
     @Schema(description = "删除者ID")
diff --git a/biji-houdaun/src/main/java/com/test/bijihoudaun/mapper/GroupingMapper.java b/biji-houdaun/src/main/java/com/test/bijihoudaun/mapper/GroupingMapper.java
index ee642fe..a1a6837 100644
--- a/biji-houdaun/src/main/java/com/test/bijihoudaun/mapper/GroupingMapper.java
+++ b/biji-houdaun/src/main/java/com/test/bijihoudaun/mapper/GroupingMapper.java
@@ -2,8 +2,13 @@ package com.test.bijihoudaun.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.test.bijihoudaun.entity.Grouping;
+import org.apache.ibatis.annotations.Delete;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Delete;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
 import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Update;
 
 import java.util.List;
 
@@ -12,4 +17,10 @@ public interface GroupingMapper extends BaseMapper<Grouping> {
 
     @Select("SELECT * FROM grouping WHERE is_deleted = 1")
     List<Grouping> selectDeleted();
+
+    @Delete("DELETE FROM grouping WHERE id = #{id}")
+    void physicalDeleteById(@Param("id") Long id);
+
+    @Update("UPDATE grouping SET is_deleted = 0, deleted_at = NULL, deleted_by = NULL WHERE id = #{id}")
+    void restoreById(@Param("id") Long id);
 }
diff --git a/biji-houdaun/src/main/java/com/test/bijihoudaun/mapper/MarkdownFileMapper.java b/biji-houdaun/src/main/java/com/test/bijihoudaun/mapper/MarkdownFileMapper.java
index 32efec9..0c86114 100644
--- a/biji-houdaun/src/main/java/com/test/bijihoudaun/mapper/MarkdownFileMapper.java
+++ b/biji-houdaun/src/main/java/com/test/bijihoudaun/mapper/MarkdownFileMapper.java
@@ -9,6 +9,9 @@ import org.apache.ibatis.annotations.Select;
 
 import java.util.List;
 
+import org.apache.ibatis.annotations.Delete;
+import org.apache.ibatis.annotations.Update;
+
 @Mapper
 public interface MarkdownFileMapper extends BaseMapper<MarkdownFile> {
 
@@ -29,4 +32,13 @@ public interface MarkdownFileMapper extends BaseMapper<MarkdownFile> {
 
     @Select("SELECT * FROM markdown_file WHERE is_deleted = 1")
     List<MarkdownFile> selectDeleted();
+
+    @Delete("DELETE FROM markdown_file WHERE id = #{id}")
+    void physicalDeleteById(@Param("id") Long id);
+
+    @Delete("DELETE FROM markdown_file WHERE grouping_id = #{groupingId}")
+    void physicalDeleteByGroupingId(@Param("groupingId") Long groupingId);
+
+    @Update("UPDATE markdown_file SET is_deleted = 0, deleted_at = NULL, deleted_by = NULL WHERE id = #{id}")
+    void restoreById(@Param("id") Long id);
 }
diff --git a/biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/TrashServiceImpl.java b/biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/TrashServiceImpl.java
index 06ef803..2abb930 100644
--- a/biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/TrashServiceImpl.java
+++ b/biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/TrashServiceImpl.java
@@ -1,6 +1,7 @@
 package com.test.bijihoudaun.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import com.test.bijihoudaun.entity.Grouping;
 import com.test.bijihoudaun.entity.MarkdownFile;
 import com.test.bijihoudaun.entity.TrashItemVo;
@@ -62,19 +63,9 @@ public class TrashServiceImpl implements TrashService {
     @Transactional
     public void restoreItem(String id, String type) {
         if ("note".equals(type)) {
-            MarkdownFile file = new MarkdownFile();
-            file.setId(Long.parseLong(id));
-            file.setIsDeleted(0);
-            file.setDeletedAt(null);
-            file.setDeletedBy(null);
-            markdownFileMapper.updateById(file);
+            markdownFileMapper.restoreById(Long.parseLong(id));
         } else if ("group".equals(type)) {
-            Grouping group = new Grouping();
-            group.setId(Long.parseLong(id));
-            group.setIsDeleted(0);
-            group.setDeletedAt(null);
-            group.setDeletedBy(null);
-            groupingMapper.updateById(group);
+            groupingMapper.restoreById(Long.parseLong(id));
         }
     }
 
@@ -82,11 +73,11 @@ public class TrashServiceImpl implements TrashService {
     @Transactional
     public void permanentlyDeleteItem(String id, String type) {
         if ("note".equals(type)) {
-            markdownFileMapper.deleteById(Long.parseLong(id));
+            markdownFileMapper.physicalDeleteById(Long.parseLong(id));
         } else if ("group".equals(type)) {
-            // 删除分组时，也删除其下的所有笔记
-            groupingMapper.deleteById(Long.parseLong(id));
-            markdownFileMapper.delete(new QueryWrapper<MarkdownFile>().eq("grouping_id", id));
+            // 永久删除分组时，也永久删除其下的所有笔记
+            groupingMapper.physicalDeleteById(Long.parseLong(id));
+            markdownFileMapper.physicalDeleteByGroupingId(Long.parseLong(id));
         }
     }
 
diff --git a/biji-qianduan/src/components/HomePage.vue b/biji-qianduan/src/components/HomePage.vue
index 8d973a6..89a889a 100644
--- a/biji-qianduan/src/components/HomePage.vue
+++ b/biji-qianduan/src/components/HomePage.vue
@@ -639,12 +639,9 @@ const handleDeleteGroup = (group) => {
     try {
       await apiDeleteGrouping(group.id);
       ElMessage.success('分类已删除');
+      // 删除分类后，刷新分组树并回到主视图
       await fetchGroupings();
-      await fetchMarkdownFiles();
-      if (activeMenu.value.startsWith('group-') && activeMenu.value.endsWith(group.id)) {
-        activeMenu.value = 'all';
-        groupMarkdownFiles.value = markdownFiles.value;
-      }
+      await resetToHomeView();
     } catch (error) {
       ElMessage.error('删除分类失败: ' + error.message);
     }
@@ -666,13 +663,10 @@ const deleteNote = (file) => {
     try {
       await deleteMarkdown(file.id);
       ElMessage.success('笔记已删除');
-      selectedFile.value = null;
-      await fetchMarkdownFiles();
-      // Optionally, refresh the current group's file list
-      if (activeMenu.value.startsWith('group-')) {
-        const groupId = activeMenu.value.split('-');
-        await selectFile({ id: groupId });
-      }
+      selectedFile.value = null; // 关闭预览
+      // 刷新分组和主视图
+      await fetchGroupings();
+      await resetToHomeView();
     } catch (error) {
       ElMessage.error('删除笔记失败: ' + error.message);
     }
diff --git a/mydatabase.db b/mydatabase.db
index 69dd3fd..2c30f18 100644
Binary files a/mydatabase.db and b/mydatabase.db differ