diff --git a/functions.php b/functions.php
index 1cfdc74..4d209a1 100644
--- a/functions.php
+++ b/functions.php
@@ -605,60 +605,158 @@ function commentApprove($widget, $email = NULL)
 }
 
 /**
- * 修改附件插入功能
+ * Typecho后台附件增强：图片预览、批量插入、保留官方删除按钮与逻辑
+ * @author 老孙博客
+ * @date 2025-04-25
  */
-// 添加批量插入按钮的JavaScript
-// 避免重复注册，使用条件判断
-if (!Typecho_Plugin::exists('admin/write-post.php', 'bottom')) {
-    Typecho_Plugin::factory('admin/write-post.php')->bottom = array('MyHelper', 'addBatchInsertButton');
-    Typecho_Plugin::factory('admin/write-page.php')->bottom = array('MyHelper', 'addBatchInsertButton');
-}
+Typecho_Plugin::factory('admin/write-post.php')->bottom = array('AttachmentHelper', 'addEnhancedFeatures');
+Typecho_Plugin::factory('admin/write-page.php')->bottom = array('AttachmentHelper', 'addEnhancedFeatures');
 
-class MyHelper {
-    public static function addBatchInsertButton() {
+class AttachmentHelper {
+    public static function addEnhancedFeatures() {
         ?>
+        <style>
+        #file-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:15px;padding:15px;list-style:none;margin:0;}
+        #file-list li{position:relative;border:1px solid #e0e0e0;border-radius:4px;padding:10px;background:#fff;transition:all 0.3s ease;list-style:none;margin:0;}
+        #file-list li:hover{box-shadow:0 2px 8px rgba(0,0,0,0.1);}
+        #file-list li.loading{opacity:0.7;pointer-events:none;}
+        .att-enhanced-thumb{position:relative;width:100%;height:150px;margin-bottom:8px;background:#f5f5f5;overflow:hidden;border-radius:3px;display:flex;align-items:center;justify-content:center;}
+        .att-enhanced-thumb img{width:100%;height:100%;object-fit:contain;display:block;}
+        .att-enhanced-thumb .file-icon{display:flex;align-items:center;justify-content:center;width:100%;height:100%;font-size:40px;color:#999;}
+        .att-enhanced-finfo{padding:5px 0;}
+        .att-enhanced-fname{font-size:13px;margin-bottom:5px;word-break:break-all;color:#333;}
+        .att-enhanced-fsize{font-size:12px;color:#999;}
+        .att-enhanced-factions{display:flex;justify-content:space-between;align-items:center;margin-top:8px;gap:8px;}
+        .att-enhanced-factions button{flex:1;padding:4px 8px;border:none;border-radius:3px;background:#e0e0e0;color:#333;cursor:pointer;font-size:12px;transition:all 0.2s ease;}
+        .att-enhanced-factions button:hover{background:#d0d0d0;}
+        .att-enhanced-factions .btn-insert{background:#467B96;color:white;}
+        .att-enhanced-factions .btn-insert:hover{background:#3c6a81;}
+        .att-enhanced-checkbox{position:absolute;top:5px;right:5px;z-index:2;width:18px;height:18px;cursor:pointer;}
+        .batch-actions{margin:15px;display:flex;gap:10px;align-items:center;}
+        .btn-batch{padding:8px 15px;border-radius:4px;border:none;cursor:pointer;transition:all 0.3s ease;font-size:10px;display:inline-flex;align-items:center;justify-content:center;}
+        .btn-batch.primary{background:#467B96;color:white;}
+        .btn-batch.primary:hover{background:#3c6a81;}
+        .btn-batch.secondary{background:#e0e0e0;color:#333;}
+        .btn-batch.secondary:hover{background:#d0d0d0;}
+        .upload-progress{position:absolute;bottom:0;left:0;width:100%;height:2px;background:#467B96;transition:width 0.3s ease;}
+        </style>
         <script>
         $(document).ready(function() {
-            // 添加批量插入按钮
-            var batchButton = $('<button type="button" class="btn primary" id="batch-insert">批量插入所有附件</button>');
-            $('#file-list').before(batchButton);
-            
-            // 修改单个附件的插入格式
+            // 批量操作UI按钮
+            var $batchActions = $('<div class="batch-actions"></div>')
+                .append('<button type="button" class="btn-batch primary" id="batch-insert">批量插入</button>')
+                .append('<button type="button" class="btn-batch secondary" id="select-all">全选</button>')
+                .append('<button type="button" class="btn-batch secondary" id="unselect-all">取消全选</button>');
+            $('#file-list').before($batchActions);
+
+            // 插入格式
             Typecho.insertFileToEditor = function(title, url, isImage) {
-                var textarea = $('#text'), sel = textarea.getSelection(),
+                var textarea = $('#text'), 
+                    sel = textarea.getSelection(),
                     insertContent = isImage ? '![' + title + '](' + url + ')' : 
                                             '[' + title + '](' + url + ')';
-                
-                textarea.replaceSelection(insertContent);
+                textarea.replaceSelection(insertContent + '\n');
                 textarea.focus();
             };
-            
-            // 批量插入功能
-            $('#batch-insert').click(function() {
+
+            // 批量插入
+            $('#batch-insert').on('click', function(e) {
+                e.preventDefault();
+                e.stopPropagation();
                 var content = '';
                 $('#file-list li').each(function() {
-                    var $this = $(this),
-                        title = $this.find('.insert').text(),
-                        url = $this.data('url'),
-                        isImage = $this.data('image') == 1;
-                        
-                    content += isImage ? '![' + title + '](' + url + ')\n' : 
-                                       '[' + title + '](' + url + ')\n';
+                    if ($(this).find('.att-enhanced-checkbox').is(':checked')) {
+                        var $li = $(this);
+                        var title = $li.find('.att-enhanced-fname').text();
+                        var url = $li.data('url');
+                        var isImage = $li.data('image') == 1;
+                        content += isImage ? '![' + title + '](' + url + ')\n' : '[' + title + '](' + url + ')\n';
+                    }
                 });
-                
-                var textarea = $('#text');
-                var pos = textarea.getSelection();
-                var newContent = textarea.val();
-                if (pos.start === pos.end) {
-                    newContent = newContent.substring(0, pos.start) + content + newContent.substring(pos.start);
-                } else {
+                if (content) {
+                    var textarea = $('#text');
+                    var pos = textarea.getSelection();
+                    var newContent = textarea.val();
                     newContent = newContent.substring(0, pos.start) + content + newContent.substring(pos.end);
+                    textarea.val(newContent);
+                    textarea.focus();
                 }
-                textarea.val(newContent);
-                textarea.focus();
             });
+
+            $('#select-all').on('click', function(e) {
+                e.preventDefault();
+                e.stopPropagation();
+                $('#file-list .att-enhanced-checkbox').prop('checked', true);
+                return false;
+            });
+            $('#unselect-all').on('click', function(e) {
+                e.preventDefault();
+                e.stopPropagation();
+                $('#file-list .att-enhanced-checkbox').prop('checked', false);
+                return false;
+            });
+
+            // 防止复选框冒泡
+            $(document).on('click', '.att-enhanced-checkbox', function(e) {e.stopPropagation();});
+
+            // 增强文件列表样式，但不破坏li原结构和官方按钮
+            function enhanceFileList() {
+                $('#file-list li').each(function() {
+                    var $li = $(this);
+                    if ($li.hasClass('att-enhanced')) return;
+                    $li.addClass('att-enhanced');
+                    // 只增强，不清空li
+                    // 增加批量选择框
+                    if ($li.find('.att-enhanced-checkbox').length === 0) {
+                        $li.prepend('<input type="checkbox" class="att-enhanced-checkbox" />');
+                    }
+                    // 增加图片预览（如已有则不重复加）
+                    if ($li.find('.att-enhanced-thumb').length === 0) {
+                        var url = $li.data('url');
+                        var isImage = $li.data('image') == 1;
+                        var fileName = $li.find('.insert').text();
+                        var $thumbContainer = $('<div class="att-enhanced-thumb"></div>');
+                        if (isImage) {
+                            var $img = $('<img src="' + url + '" alt="' + fileName + '" />');
+                            $img.on('error', function() {
+                                $(this).replaceWith('<div class="file-icon">🖼️</div>');
+                            });
+                            $thumbContainer.append($img);
+                        } else {
+                            $thumbContainer.append('<div class="file-icon">📄</div>');
+                        }
+                        // 插到插入按钮之前
+                        $li.find('.insert').before($thumbContainer);
+                    }
+
+                });
+            }
+
+            // 插入按钮事件
+            $(document).on('click', '.btn-insert', function(e) {
+                e.preventDefault();
+                e.stopPropagation();
+                var $li = $(this).closest('li');
+                var title = $li.find('.att-enhanced-fname').text();
+                Typecho.insertFileToEditor(title, $li.data('url'), $li.data('image') == 1);
+            });
+
+            // 上传完成后增强新项
+            var originalUploadComplete = Typecho.uploadComplete;
+            Typecho.uploadComplete = function(attachment) {
+                setTimeout(function() {
+                    enhanceFileList();
+                }, 200);
+                if (typeof originalUploadComplete === 'function') {
+                    originalUploadComplete(attachment);
+                }
+            };
+
+            // 首次增强
+            enhanceFileList();
         });
         </script>
         <?php
     }
-}
\ No newline at end of file
+}
+?>
\ No newline at end of file