diff --git a/app.py b/app.py
index 0aa807c..2a8de04 100644
--- a/app.py
+++ b/app.py
@@ -19,7 +19,7 @@ from mastodon import Mastodon
 from datetime import date, datetime
 from functools import wraps
 import hashlib
-from zipfile import ZipFile
+import shutil
 import random
 import os
 import re
@@ -204,15 +204,17 @@ def upload(username):
         abort(422)
 
     files = request.files.getlist('files[]')
+    print(files)
 
     dir_name = username + str(datetime.now())
     base_path = os.path.join('/tmp', dir_name)
     os.mkdir(base_path)
     for f in files:
-        filename = f.filename.replace('/','_')
+        filename = f.filename.replace('..','__')
+        os.makedirs(os.path.dirname(os.path.join(base_path, filename)), exist_ok=True)
         f.save(os.path.join(base_path, filename))
 
-    res = ipfs_client.add(base_path)
+    res = ipfs_client.add(base_path, recursive=True)
     file_hash = ''
     for r in res:
         if r.get('Name') == dir_name:
@@ -250,17 +252,25 @@ def download(pid, username):
         p.down_num += 1
         db.session.commit()
 
-    if request.args.get('type') == 'zip':
-        target_file = '/tmp/%s.zip' % pid
-
-        if not os.path.exists(target_file):
-            ipfs_client.get(p.file_hash, target='/tmp')
-            with ZipFile(target_file, 'w') as z:
-                for fname in os.listdir(os.path.join('/tmp', p.file_hash)):
-                    z.write(os.path.join('/tmp', p.file_hash, fname), fname)
-
-        filename = re.sub('[^\w@_()（）-]', '_', '%s_%s_共享计划_%d' %(p.course, p.teacher, p.id)) + '.zip'
-        return send_file(target_file, as_attachment=True, attachment_filename=filename)
+    dformat = request.args.get('format')
+    suff = {
+            'zip': '.zip',
+            'tar': '.tar',
+            'gztar': '.tar.gz'
+        }
+
+    if dformat in suff:
+        target_file = '/tmp/%s' % pid
+        target_filename = target_file + suff[dformat]
+        target_dir = os.path.join('/tmp', p.file_hash)
+
+        if not os.path.exists(target_filename):
+            if not os.path.exists(target_dir):
+                ipfs_client.get(p.file_hash, target='/tmp')
+            shutil.make_archive(target_file, dformat, target_dir)
+
+        filename = re.sub('[^\w@_()（）-]', '_', '%s_%s_共享计划_%d' %(p.course, p.teacher, p.id)) + suff[dformat]
+        return send_file(target_filename, as_attachment=True, attachment_filename=filename)
 
     return redirect(C.ipfs_base_url + p.file_hash, code=301) # 301减少不必要的请求
 
diff --git a/templates/list.html b/templates/list.html
index 3481eea..2fa8d57 100644
--- a/templates/list.html
+++ b/templates/list.html
@@ -229,6 +229,10 @@
     .wechat-share img {
       width: 196px;
     }
+
+    .custom-file-label {
+      overflow: hidden;
+    }
   </style>
 </head>
 
@@ -296,6 +300,10 @@
             <input type="file" class="custom-file-input" name="files[]" multiple required>
             <label class="custom-file-label" for="customFile" data-browse="浏览">选择文件，可以多选</label>
           </div>
+          <div class="custom-control custom-switch mb-2 mt-3 ml-1">
+            <input type="checkbox" class="custom-control-input" id="upload-dir" name="upload-dir">
+            <label class="custom-control-label" for="upload-dir">上传文件夹</label>
+          </div>
           <div class="custom-control custom-switch mb-2 mt-3 ml-1">
             <input type="checkbox" class="custom-control-input" id="anon" name="anon">
             <label class="custom-control-label" for="anon">匿名发布</label>
@@ -313,7 +321,7 @@
       <button class="mask" onclick="alert('目前guest无权限上传')"></button>
       {% endif %}
 
-      <div style="font-size:80%;">
+      <div style="font-size:80%;margin-bottom:70px">
         <ul>
           <li>
             如果觉得提交太麻烦，也可将资料发给
@@ -440,9 +448,9 @@
                 <span class="sr-only">Toggle Dropdown</span>
               </button>
               <div class="dropdown-menu" style="min-width: 5rem">
-                <a class="dropdown-item" href="{{p.id}}/download?type=zip" target="_blank" id="download-zip-{{p.id}}">
-                  <span class="num-info">打包下载</span>
-               </a>
+                <a class="dropdown-item" href="{{p.id}}/download?format=zip" target="_blank"><span class="num-info">打包下载 - zip</span></a>
+                <a class="dropdown-item" href="{{p.id}}/download?format=tar" target="_blank"><span class="num-info">打包下载 - tar</span></a>
+                <a class="dropdown-item" href="{{p.id}}/download?format=gztar" target="_blank"><span class="num-info">打包下载 - gzip</span></a>
               </div>
             </span>
           </div>
@@ -503,7 +511,21 @@
   }
 
   $(document).ready(function () {
-    bsCustomFileInput.init()
+    bsCustomFileInput.init();
+    $("#upload-dir").change(function() {
+      var fi = $('.custom-file-input');
+      var fl = $('.custom-file-label');
+      console.log(fi);
+      if(this.checked) {
+        fi.attr('webkitdirectory', true);
+        fl.text('选择文件夹，可以多选');
+      }
+      else {
+        fi.removeAttr('webkitdirectory');
+        fl.text('选择文件，可以多选');
+      }
+    });
+
     $('[data-toggle="popover"]').popover({
         html: true,
         placement: "top",