diff --git a/biji-houdaun/src/main/java/com/test/bijihoudaun/controller/TrashController.java b/biji-houdaun/src/main/java/com/test/bijihoudaun/controller/TrashController.java
new file mode 100644
index 0000000..5e53222
--- /dev/null
+++ b/biji-houdaun/src/main/java/com/test/bijihoudaun/controller/TrashController.java
@@ -0,0 +1,47 @@
+package com.test.bijihoudaun.controller;
+
+import com.test.bijihoudaun.common.response.R;
+import com.test.bijihoudaun.entity.TrashItemVo;
+import com.test.bijihoudaun.service.TrashService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/trash")
+@Tag(name = "回收站管理")
+public class TrashController {
+
+    @Autowired
+    private TrashService trashService;
+
+    @GetMapping
+    @Operation(summary = "获取回收站列表")
+    public R<List<TrashItemVo>> getTrashItems() {
+        return R.success(trashService.getTrashItems());
+    }
+
+    @PostMapping("/restore/{type}/{id}")
+    @Operation(summary = "恢复项目")
+    public R<Void> restoreItem(@PathVariable String type, @PathVariable String id) {
+        trashService.restoreItem(id, type);
+        return R.success();
+    }
+
+    @DeleteMapping("/permanently/{type}/{id}")
+    @Operation(summary = "永久删除项目")
+    public R<Void> permanentlyDeleteItem(@PathVariable String type, @PathVariable String id) {
+        trashService.permanentlyDeleteItem(id, type);
+        return R.success();
+    }
+
+    @DeleteMapping("/clean")
+    @Operation(summary = "清空回收站")
+    public R<Void> cleanTrash() {
+        trashService.cleanTrash();
+        return R.success();
+    }
+}
\ No newline at end of file
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
new file mode 100644
index 0000000..425f408
--- /dev/null
+++ b/biji-houdaun/src/main/java/com/test/bijihoudaun/entity/TrashItemVo.java
@@ -0,0 +1,28 @@
+package com.test.bijihoudaun.entity;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+import java.util.Date;
+
+@Data
+@Schema(name = "回收站项目视图对象")
+public class TrashItemVo {
+
+    @Schema(description = "项目ID")
+    private String id;
+
+    @Schema(description = "项目名称（笔记标题或分组名称）")
+    private String title;
+
+    @Schema(description = "项目类型（note 或 group）")
+    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")
+    private String deletedBy;
+}
\ No newline at end of file
diff --git a/biji-houdaun/src/main/java/com/test/bijihoudaun/service/TrashService.java b/biji-houdaun/src/main/java/com/test/bijihoudaun/service/TrashService.java
new file mode 100644
index 0000000..8fc004c
--- /dev/null
+++ b/biji-houdaun/src/main/java/com/test/bijihoudaun/service/TrashService.java
@@ -0,0 +1,33 @@
+package com.test.bijihoudaun.service;
+
+import com.test.bijihoudaun.entity.TrashItemVo;
+
+import java.util.List;
+
+public interface TrashService {
+
+    /**
+     * 获取回收站中的所有项目
+     * @return 回收站项目列表
+     */
+    List<TrashItemVo> getTrashItems();
+
+    /**
+     * 恢复指定的回收站项目
+     * @param id 项目ID
+     * @param type 项目类型 ("note" 或 "group")
+     */
+    void restoreItem(String id, String type);
+
+    /**
+     * 永久删除指定的回收站项目
+     * @param id 项目ID
+     * @param type 项目类型 ("note" 或 "group")
+     */
+    void permanentlyDeleteItem(String id, String type);
+
+    /**
+     * 清空回收站
+     */
+    void cleanTrash();
+}
\ No newline at end of file
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
new file mode 100644
index 0000000..2abb930
--- /dev/null
+++ b/biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/TrashServiceImpl.java
@@ -0,0 +1,90 @@
+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;
+import com.test.bijihoudaun.mapper.GroupingMapper;
+import com.test.bijihoudaun.mapper.MarkdownFileMapper;
+import com.test.bijihoudaun.service.TrashService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+@Service
+public class TrashServiceImpl implements TrashService {
+
+    @Autowired
+    private MarkdownFileMapper markdownFileMapper;
+
+    @Autowired
+    private GroupingMapper groupingMapper;
+
+    @Override
+    public List<TrashItemVo> getTrashItems() {
+        // 调用自定义的Mapper方法查询已删除的笔记，绕过全局逻辑删除过滤器
+        List<TrashItemVo> deletedNotes = markdownFileMapper.selectDeleted()
+                .stream()
+                .map(file -> {
+                    TrashItemVo vo = new TrashItemVo();
+                    vo.setId(String.valueOf(file.getId()));
+                    vo.setTitle(file.getTitle());
+                    vo.setType("note");
+                    vo.setDeletedAt(file.getDeletedAt());
+                    vo.setDeletedBy(String.valueOf(file.getDeletedBy()));
+                    return vo;
+                })
+                .collect(Collectors.toList());
+
+        // 调用自定义的Mapper方法查询已删除的分组
+        List<TrashItemVo> deletedGroups = groupingMapper.selectDeleted()
+                .stream()
+                .map(group -> {
+                    TrashItemVo vo = new TrashItemVo();
+                    vo.setId(String.valueOf(group.getId()));
+                    vo.setTitle(group.getGrouping());
+                    vo.setType("group");
+                    vo.setDeletedAt(group.getDeletedAt());
+                    vo.setDeletedBy(String.valueOf(group.getDeletedBy()));
+                    return vo;
+                })
+                .collect(Collectors.toList());
+
+        // 合并并返回
+        return Stream.concat(deletedNotes.stream(), deletedGroups.stream()).collect(Collectors.toList());
+    }
+
+    @Override
+    @Transactional
+    public void restoreItem(String id, String type) {
+        if ("note".equals(type)) {
+            markdownFileMapper.restoreById(Long.parseLong(id));
+        } else if ("group".equals(type)) {
+            groupingMapper.restoreById(Long.parseLong(id));
+        }
+    }
+
+    @Override
+    @Transactional
+    public void permanentlyDeleteItem(String id, String type) {
+        if ("note".equals(type)) {
+            markdownFileMapper.physicalDeleteById(Long.parseLong(id));
+        } else if ("group".equals(type)) {
+            // 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));
+        }
+    }
+
+    @Override
+    @Transactional
+    public void cleanTrash() {
+        markdownFileMapper.delete(new QueryWrapper<MarkdownFile>().eq("is_deleted", 1));
+        groupingMapper.delete(new QueryWrapper<Grouping>().eq("is_deleted", 1));
+    }
+}
\ No newline at end of file
diff --git a/biji-qianduan/src/components/TrashPage.vue b/biji-qianduan/src/components/TrashPage.vue
new file mode 100644
index 0000000..c7d43d4
--- /dev/null
+++ b/biji-qianduan/src/components/TrashPage.vue
@@ -0,0 +1,104 @@
+<template>
+  <el-container>
+    <el-header>
+      <h1>回收站</h1>
+      <el-button type="danger" @click="handleCleanTrash" :disabled="trashItems.length === 0">清空回收站</el-button>
+      <el-button @click="goBack">返回首页</el-button>
+    </el-header>
+    <el-main>
+      <el-table :data="trashItems" style="width: 100%">
+        <el-table-column prop="title" label="名称"></el-table-column>
+        <el-table-column prop="type" label="类型">
+          <template #default="scope">
+            <el-tag :type="scope.row.type === 'group' ? 'success' : 'primary'">
+              {{ scope.row.type === 'group' ? '分类' : '笔记' }}
+            </el-tag>
+          </template>
+        </el-table-column>
+        <el-table-column prop="deletedAt" label="删除时间"></el-table-column>
+        <el-table-column label="操作">
+          <template #default="scope">
+            <el-button size="small" type="primary" @click="handleRestore(scope.row)">恢复</el-button>
+            <el-button size="small" type="danger" @click="handleDeletePermanently(scope.row)">永久删除</el-button>
+          </template>
+        </el-table-column>
+      </el-table>
+      <el-empty v-if="trashItems.length === 0" description="回收站是空的"></el-empty>
+    </el-main>
+  </el-container>
+</template>
+
+<script setup>
+import { ref, onMounted } from 'vue';
+import { useRouter } from 'vue-router';
+import { ElMessage, ElMessageBox } from 'element-plus';
+import { getTrash, restoreTrashItem, permanentlyDeleteItem, cleanTrash } from '@/api/CommonApi.js';
+
+const router = useRouter();
+const trashItems = ref([]);
+
+const fetchTrashItems = async () => {
+  try {
+    const response = await getTrash();
+    trashItems.value = response.data || [];
+  } catch (error) {
+    ElMessage.error('获取回收站内容失败');
+  }
+};
+
+const handleRestore = async (item) => {
+  try {
+    await restoreTrashItem(item.id, item.type);
+    ElMessage.success('恢复成功');
+    fetchTrashItems();
+  } catch (error) {
+    ElMessage.error('恢复失败');
+  }
+};
+
+const handleDeletePermanently = async (item) => {
+  await ElMessageBox.confirm('确定要永久删除此项目吗？此操作不可恢复。', '警告', {
+    confirmButtonText: '确定',
+    cancelButtonText: '取消',
+    type: 'warning',
+  });
+  try {
+    await permanentlyDeleteItem(item.id, item.type);
+    ElMessage.success('已永久删除');
+    fetchTrashItems();
+  } catch (error) {
+    ElMessage.error('删除失败');
+  }
+};
+
+const handleCleanTrash = async () => {
+  await ElMessageBox.confirm('确定要清空回收站吗？此操作不可恢复。', '警告', {
+    confirmButtonText: '确定',
+    cancelButtonText: '取消',
+    type: 'warning',
+  });
+  try {
+    await cleanTrash();
+    ElMessage.success('回收站已清空');
+    fetchTrashItems();
+  } catch (error) {
+    ElMessage.error('清空失败');
+  }
+};
+
+const goBack = () => {
+  router.push('/home');
+};
+
+onMounted(() => {
+  fetchTrashItems();
+});
+</script>
+
+<style scoped>
+.el-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+</style>
\ No newline at end of file
diff --git a/回收站功能设计.md b/回收站功能设计.md
new file mode 100644
index 0000000..65a66e8
--- /dev/null
+++ b/回收站功能设计.md
@@ -0,0 +1,22 @@
+# 回收站功能设计方案
+
+## 功能需求
+- 实现笔记和分类的软删除功能
+- 提供30天数据保留期
+- 支持恢复和永久删除操作
+
+## 前端修改
+1. 侧边栏添加回收站入口
+2. 删除操作改为"移至回收站"
+3. 新建TrashPage.vue组件
+
+## 后端修改
+```sql
+ALTER TABLE markdown ADD COLUMN is_deleted BOOLEAN DEFAULT false;
+ALTER TABLE markdown ADD COLUMN deleted_at TIMESTAMP;
+```
+
+## API接口
+- GET /api/trash - 获取回收站内容
+- POST /api/trash/restore - 恢复项目
+- DELETE /api/trash/clean - 清空回收站
\ No newline at end of file