diff --git a/src/components/Comment/index.js b/src/components/Comment/index.js
new file mode 100644
index 0000000..0442a95
--- /dev/null
+++ b/src/components/Comment/index.js
@@ -0,0 +1,93 @@
+import React, { useState, useEffect } from 'react';
+import styles from './styles.module.css';
+
+export default function Comment({ docId }) {
+  const [comments, setComments] = useState([]);
+  const [newComment, setNewComment] = useState('');
+  const [isOpen, setIsOpen] = useState(false);
+
+  useEffect(() => {
+    // 从localStorage中读取评论
+    const savedComments = JSON.parse(localStorage.getItem(`docComments_${docId}`) || '[]');
+    setComments(savedComments);
+  }, [docId]);
+
+  const handleAddComment = () => {
+    if (!newComment.trim()) return;
+
+    const comment = {
+      id: Date.now(),
+      text: newComment,
+      timestamp: new Date().toLocaleString(),
+      author: '用户' // 这里可以替换为实际的用户名
+    };
+
+    const updatedComments = [...comments, comment];
+    setComments(updatedComments);
+    localStorage.setItem(`docComments_${docId}`, JSON.stringify(updatedComments));
+    setNewComment('');
+  };
+
+  const handleDeleteComment = (commentId) => {
+    const updatedComments = comments.filter(comment => comment.id !== commentId);
+    setComments(updatedComments);
+    localStorage.setItem(`docComments_${docId}`, JSON.stringify(updatedComments));
+  };
+
+  return (
+    <div className={styles.commentContainer}>
+      <button
+        onClick={() => setIsOpen(!isOpen)}
+        className={styles.commentButton}
+        aria-label="评论"
+        type="button"
+      >
+        <svg
+          viewBox="0 0 24 24"
+          width="16"
+          height="16"
+          stroke="currentColor"
+          strokeWidth="2"
+          fill="none"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+        >
+          <path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z" />
+        </svg>
+      </button>
+
+      {isOpen && (
+        <div className={styles.commentPanel}>
+          <div className={styles.commentList}>
+            {comments.map(comment => (
+              <div key={comment.id} className={styles.commentItem}>
+                <div className={styles.commentHeader}>
+                  <span className={styles.commentAuthor}>{comment.author}</span>
+                  <span className={styles.commentTime}>{comment.timestamp}</span>
+                  <button
+                    onClick={() => handleDeleteComment(comment.id)}
+                    className={styles.deleteButton}
+                  >
+                    ×
+                  </button>
+                </div>
+                <div className={styles.commentText}>{comment.text}</div>
+              </div>
+            ))}
+          </div>
+          <div className={styles.commentInput}>
+            <textarea
+              value={newComment}
+              onChange={(e) => setNewComment(e.target.value)}
+              placeholder="添加评论..."
+              rows={3}
+            />
+            <button onClick={handleAddComment} className={styles.submitButton}>
+              发表评论
+            </button>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+} 
\ No newline at end of file
diff --git a/src/components/Comment/styles.module.css b/src/components/Comment/styles.module.css
new file mode 100644
index 0000000..054a149
--- /dev/null
+++ b/src/components/Comment/styles.module.css
@@ -0,0 +1,132 @@
+.commentContainer {
+  position: relative;
+  display: inline-block;
+}
+
+.commentButton {
+  background: none;
+  border: none;
+  cursor: pointer;
+  padding: 4px;
+  color: var(--ifm-color-emphasis-600);
+  transition: all 0.2s ease;
+  opacity: 0;
+  z-index: 100;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 20px;
+  height: 20px;
+}
+
+.commentButton:hover {
+  color: var(--ifm-color-primary);
+  transform: scale(1.1);
+}
+
+.commentPanel {
+  position: absolute;
+  top: 100%;
+  right: 0;
+  width: 300px;
+  background: var(--ifm-background-color);
+  border: 1px solid var(--ifm-color-emphasis-200);
+  border-radius: 8px;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
+  z-index: 1000;
+  margin-top: 8px;
+  padding: 16px;
+}
+
+.commentList {
+  max-height: 300px;
+  overflow-y: auto;
+  margin-bottom: 16px;
+}
+
+.commentItem {
+  padding: 8px;
+  border-bottom: 1px solid var(--ifm-color-emphasis-200);
+}
+
+.commentItem:last-child {
+  border-bottom: none;
+}
+
+.commentHeader {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 4px;
+}
+
+.commentAuthor {
+  font-weight: 500;
+  color: var(--ifm-color-primary);
+}
+
+.commentTime {
+  font-size: 12px;
+  color: var(--ifm-color-emphasis-600);
+}
+
+.deleteButton {
+  background: none;
+  border: none;
+  color: var(--ifm-color-emphasis-600);
+  cursor: pointer;
+  padding: 0 4px;
+  font-size: 16px;
+}
+
+.deleteButton:hover {
+  color: var(--ifm-color-danger);
+}
+
+.commentText {
+  font-size: 14px;
+  line-height: 1.4;
+  color: var(--ifm-color-emphasis-800);
+}
+
+.commentInput {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.commentInput textarea {
+  width: 100%;
+  padding: 8px;
+  border: 1px solid var(--ifm-color-emphasis-200);
+  border-radius: 4px;
+  resize: vertical;
+  font-family: inherit;
+  font-size: 14px;
+}
+
+.commentInput textarea:focus {
+  outline: none;
+  border-color: var(--ifm-color-primary);
+}
+
+.submitButton {
+  align-self: flex-end;
+  padding: 6px 12px;
+  background-color: var(--ifm-color-primary);
+  color: white;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 14px;
+  transition: background-color 0.2s ease;
+}
+
+.submitButton:hover {
+  background-color: var(--ifm-color-primary-darker);
+}
+
+/* 当鼠标悬停在侧边栏项目上时显示评论按钮 */
+:global(.menu__link-wrapper:hover) .commentButton {
+  opacity: 1;
+} 
\ No newline at end of file
diff --git a/src/theme/DocSidebarItem/index.js b/src/theme/DocSidebarItem/index.js
index 43fd1c6..d75aba0 100644
--- a/src/theme/DocSidebarItem/index.js
+++ b/src/theme/DocSidebarItem/index.js
@@ -1,6 +1,7 @@
 import React, { useEffect, useState } from 'react';
 import DocSidebarItem from '@theme-original/DocSidebarItem';
 import styles from './styles.module.css';
+import Comment from '@site/src/components/Comment';
 
 export default function DocSidebarItemWrapper(props) {
   const { item } = props;
@@ -31,6 +32,9 @@ export default function DocSidebarItemWrapper(props) {
       <li className={`menu__list-item ${isBookmarked ? styles.bookmarkedItem : ''}`}>
         <div className={styles.menuLinkWrapper}>
           <DocSidebarItem {...props} />
+          <div className={styles.actionButtons}>
+            <Comment docId={item.docId} />
+          </div>
         </div>
       </li>
     );
diff --git a/src/theme/DocSidebarItem/styles.module.css b/src/theme/DocSidebarItem/styles.module.css
index ea09cda..0381f52 100644
--- a/src/theme/DocSidebarItem/styles.module.css
+++ b/src/theme/DocSidebarItem/styles.module.css
@@ -1,13 +1,35 @@
 .menuLinkWrapper {
   position: relative;
+  display: flex;
+  align-items: center;
+  width: 100%;
+}
+
+.actionButtons {
+  display: flex;
+  align-items: center;
+  margin-left: auto;
+  padding-right: 8px;
+}
+
+.bookmarkedItem {
+  background-color: var(--ifm-color-emphasis-100);
 }
 
 .bookmarkedItem :global(.menu__link) {
-  color: var(--ifm-color-primary) !important;
-  font-weight: 500 !important;
-  background-color: var(--ifm-color-emphasis-100) !important;
-  border-left: 3px solid var(--ifm-color-primary) !important;
-  padding-left: calc(1rem - 3px) !important;
+  font-weight: 500;
+  color: var(--ifm-color-primary);
+}
+
+/* 确保侧边栏项目有足够的空间显示按钮 */
+:global(.menu__link-wrapper) {
+  padding-right: 60px !important;
+  position: relative !important;
+}
+
+/* 调整列表项样式 */
+:global(.menu__list-item) {
+  position: relative !important;
 }
 
 .bookmarkedItem :global(.menu__link:hover) {