diff --git a/src/views/docsetDialog.ts b/src/views/docsetDialog.ts
index 80d5222..49e597f 100644
--- a/src/views/docsetDialog.ts
+++ b/src/views/docsetDialog.ts
@@ -38,6 +38,16 @@ export function getDocsetDialogContent(): string {
         </div>
       </div>
     </div>
+    <div class="delete-confirm-dialog" id="deleteConfirmDialog">
+      <div class="delete-confirm-content">
+        <div class="delete-confirm-title">确认删除</div>
+        <div class="delete-confirm-message" id="deleteConfirmMessage"></div>
+        <div class="delete-confirm-actions">
+          <button class="docset-btn-cancel" onclick="closeDeleteConfirm()">取消</button>
+          <button class="docset-btn-confirm" onclick="confirmDelete()">确定</button>
+        </div>
+      </div>
+    </div>
   `;
 }
 
@@ -198,6 +208,89 @@ export function getDocsetDialogStyles(): string {
     .docset-btn-confirm:hover {
       background: var(--vscode-button-hoverBackground);
     }
+
+    .docset-delete-btn {
+      position: relative;
+      background: transparent;
+      border: none;
+      cursor: pointer;
+      padding: 4px;
+      color: var(--vscode-foreground);
+      opacity: 0.6;
+    }
+
+    .docset-delete-btn:hover {
+      opacity: 1;
+    }
+
+    .docset-delete-btn:hover::after {
+      content: attr(data-tooltip);
+      position: absolute;
+      bottom: 100%;
+      left: 50%;
+      transform: translateX(-50%);
+      background: var(--vscode-editorHoverWidget-background);
+      color: var(--vscode-editorHoverWidget-foreground);
+      border: 1px solid var(--vscode-editorHoverWidget-border);
+      padding: 4px 8px;
+      border-radius: 3px;
+      font-size: 12px;
+      white-space: nowrap;
+      margin-bottom: 4px;
+      z-index: 1000;
+    }
+
+    .delete-confirm-dialog {
+      display: none;
+      position: fixed;
+      top: 0;
+      left: 0;
+      right: 0;
+      bottom: 0;
+      background: rgba(0, 0, 0, 0.4);
+      z-index: 10000;
+      align-items: center;
+      justify-content: center;
+    }
+
+    .delete-confirm-dialog.active {
+      display: flex;
+    }
+
+    .delete-confirm-content {
+      background: var(--vscode-editor-background);
+      border: 1px solid var(--vscode-panel-border);
+      border-radius: 6px;
+      padding: 20px;
+      min-width: 300px;
+      max-width: 400px;
+    }
+
+    .delete-confirm-title {
+      font-size: 14px;
+      font-weight: 600;
+      margin-bottom: 12px;
+    }
+
+    .delete-confirm-message {
+      font-size: 13px;
+      color: var(--vscode-descriptionForeground);
+      margin-bottom: 16px;
+    }
+
+    .delete-confirm-actions {
+      display: flex;
+      justify-content: flex-end;
+      gap: 8px;
+    }
+
+    .delete-confirm-actions button {
+      padding: 6px 16px;
+      border: none;
+      border-radius: 4px;
+      cursor: pointer;
+      font-size: 13px;
+    }
   `;
 }
 
@@ -299,7 +392,7 @@ export function getDocsetDialogScript(): string {
         <div class="docset-item">
           <div class="docset-name">\${ds.name}</div>
           <div class="docset-meta">更新于 \${new Date(ds.updatedAt).toLocaleString('zh-CN')}</div>
-          <button class="docset-delete-btn" onclick="deleteDocumentSet('\${ds.id}')">
+          <button class="docset-delete-btn" data-tooltip="删除" onclick="showDeleteConfirm('\${ds.id}', '\${ds.name}')">
             <svg width="14" height="14" viewBox="0 0 16 16" fill="currentColor">
               <path d="M10 3h3v1h-1v9l-1 1H4l-1-1V4H2V3h3V2a1 1 0 0 1 1-1h3a1 1 0 0 1 1 1v1zM9 2H6v1h3V2zM4 13h7V4H4v9zm2-8H5v7h1V5zm1 0h1v7H7V5zm2 0h1v7H9V5z"/>
             </svg>
@@ -308,11 +401,25 @@ export function getDocsetDialogScript(): string {
       \`).join('');
     }
 
-    function deleteDocumentSet(id) {
-      if (confirm('确定删除此文档集？')) {
-        vscode.postMessage({ command: 'deleteDocumentSet', id });
+    let deleteTargetId = null;
+
+    window.showDeleteConfirm = function(id, name) {
+      deleteTargetId = id;
+      document.getElementById('deleteConfirmMessage').textContent = \`确定要删除文档集 "\${name}" 吗？此操作不可恢复。\`;
+      document.getElementById('deleteConfirmDialog').classList.add('active');
+    };
+
+    window.closeDeleteConfirm = function() {
+      document.getElementById('deleteConfirmDialog').classList.remove('active');
+      deleteTargetId = null;
+    };
+
+    window.confirmDelete = function() {
+      if (deleteTargetId) {
+        vscode.postMessage({ command: 'deleteDocumentSet', id: deleteTargetId });
+        closeDeleteConfirm();
       }
-    }
+    };
 
     window.addEventListener('message', event => {
       const message = event.data;