diff --git a/.DS_Store b/.DS_Store
index cbe3743..ebd5b5e 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/src/pages/HomePage.css b/src/pages/HomePage.css
index bc778c3..e9bb7b0 100644
--- a/src/pages/HomePage.css
+++ b/src/pages/HomePage.css
@@ -171,7 +171,7 @@
 }
 
 .hero-subtitle {
-  font-size: 1.25rem;
+  font-size: 1.5rem;
   margin-bottom: 3rem;
   color: rgba(255, 255, 255, 0.85);
   max-width: 650px;
diff --git a/src/pages/HomePage.jsx b/src/pages/HomePage.jsx
index e3b115f..3134479 100644
--- a/src/pages/HomePage.jsx
+++ b/src/pages/HomePage.jsx
@@ -90,9 +90,9 @@ const HomePage = ({ onLogin }) => {
       {/* Hero Section */}
       <section className="hero">
         <div className="hero-content">
-          <h1 className="hero-title">iMeeting —— 让会议更智能</h1>
+          <h1 className="hero-title">iMeeting - 灵 枢 (Líng Shū)</h1>
           <p className="hero-subtitle">
-            通过AI将会议音频转录并自动总结，对齐团队目标，构建企业知识库。
+            让每一次谈话都产生价值
           </p>
           <button 
             className="cta-button"
diff --git a/src/pages/MeetingDetails.css b/src/pages/MeetingDetails.css
index c913949..546f93d 100644
--- a/src/pages/MeetingDetails.css
+++ b/src/pages/MeetingDetails.css
@@ -1517,14 +1517,17 @@
   width: 90%;
   max-width: 800px;
   max-height: 90vh;
+  display: flex;
+  flex-direction: column;
   overflow: hidden;
   box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
 }
 
 .summary-modal-content {
   padding: 0 24px 24px;
-  max-height: calc(90vh - 120px);
+  flex: 1;
   overflow-y: auto;
+  min-height: 0; /* 关键：允许 flex 子元素缩小 */
 }
 
 .summary-input-section {
@@ -1832,14 +1835,17 @@
   width: 90%;
   max-width: 800px;
   max-height: 90vh;
+  display: flex;
+  flex-direction: column;
   overflow: hidden;
   box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
 }
 
 .transcript-edit-content {
   padding: 20px;
-  max-height: calc(90vh - 120px);
+  flex: 1;
   overflow-y: auto;
+  min-height: 0; /* 关键：允许 flex 子元素缩小 */
 }
 
 .modal-description {
@@ -2225,4 +2231,374 @@
   background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
   transform: translateY(-1px);
   box-shadow: 0 4px 10px rgba(102, 126, 234, 0.4);
+}
+
+/* 访问密码管理样式 */
+.access-password-section {
+  background: #fff;
+  border-left: 4px solid #f59e0b;
+}
+
+.access-password-section h2 {
+  color: #1e293b;
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  margin-bottom: 1.5rem;
+}
+
+.password-management {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+/* 创建人密码控制 */
+.creator-password-controls {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+.password-toggle-area {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+.password-toggle-btn {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.75rem 1.5rem;
+  border: 2px solid #e2e8f0;
+  border-radius: 8px;
+  background: white;
+  color: #64748b;
+  font-size: 0.95rem;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  max-width: 160px;
+}
+
+.password-toggle-btn.enabled {
+  border-color: #10b981;
+  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
+  color: white;
+}
+
+.password-toggle-btn.disabled {
+  border-color: #f59e0b;
+  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
+  color: white;
+}
+
+.password-toggle-btn:hover:not(:disabled) {
+  transform: translateY(-2px);
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+}
+
+.password-toggle-btn:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.password-display {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  padding: 1rem;
+  background: #f8fafc;
+  border: 2px solid #e2e8f0;
+  border-radius: 8px;
+}
+
+.password-label {
+  font-weight: 600;
+  color: #475569;
+  font-size: 0.9rem;
+}
+
+.password-value {
+  font-family: 'Monaco', 'Courier New', monospace;
+  font-size: 1.1rem;
+  font-weight: 700;
+  color: #1e293b;
+  letter-spacing: 0.2em;
+  padding: 0.5rem 1rem;
+  background: white;
+  border: 1px solid #cbd5e1;
+  border-radius: 6px;
+  min-width: 80px;
+  text-align: center;
+}
+
+.password-action-btn {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0.5rem;
+  background: white;
+  border: 1px solid #cbd5e1;
+  border-radius: 6px;
+  color: #64748b;
+  cursor: pointer;
+  transition: all 0.2s ease;
+}
+
+.password-action-btn:hover {
+  background: #f1f5f9;
+  border-color: #94a3b8;
+  color: #475569;
+}
+
+.password-action-btn.copied {
+  background: #10b981;
+  border-color: #10b981;
+  color: white;
+}
+
+.password-hint {
+  font-size: 0.875rem;
+  color: #64748b;
+  line-height: 1.6;
+  margin: 0;
+  padding: 0.75rem 1rem;
+  background: #f8fafc;
+  border-left: 3px solid #f59e0b;
+  border-radius: 4px;
+}
+
+/* 非创建人查看密码样式 */
+.viewer-password-display {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+.password-info-card {
+  display: flex;
+  align-items: flex-start;
+  gap: 1rem;
+  padding: 1.5rem;
+  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
+  border: 2px solid #e2e8f0;
+  border-radius: 12px;
+}
+
+.password-icon {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 48px;
+  height: 48px;
+  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
+  color: white;
+  border-radius: 12px;
+  flex-shrink: 0;
+}
+
+.password-content {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  gap: 0.75rem;
+}
+
+.password-content h4 {
+  margin: 0;
+  color: #1e293b;
+  font-size: 1rem;
+  font-weight: 600;
+}
+
+.password-display-row {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  padding: 0.75rem;
+  background: white;
+  border: 1px solid #e2e8f0;
+  border-radius: 8px;
+}
+
+.password-display-row .password-label {
+  font-size: 0.875rem;
+}
+
+.password-display-row .password-value {
+  padding: 0.25rem 0.75rem;
+  font-size: 1rem;
+  min-width: 60px;
+}
+
+.no-password-message {
+  padding: 1.5rem;
+  text-align: center;
+  background: #f8fafc;
+  border: 1px dashed #cbd5e1;
+  border-radius: 8px;
+  color: #64748b;
+}
+
+.no-password-message p {
+  margin: 0;
+  font-size: 0.9rem;
+}
+
+/* 访问密码 - 行内样式 */
+.meta-item-password {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  color: #334155;
+}
+
+.password-control-inline {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+}
+
+.password-toggle-inline {
+  display: flex;
+  align-items: center;
+  gap: 0.4rem;
+  padding: 0.4rem 0.8rem;
+  border: 1px solid #cbd5e1;
+  border-radius: 6px;
+  background: white;
+  color: #64748b;
+  font-size: 0.85rem;
+  font-weight: 500;
+  cursor: pointer;
+  transition: all 0.2s ease;
+}
+
+.password-toggle-inline.enabled {
+  border-color: #10b981;
+  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
+  color: white;
+}
+
+.password-toggle-inline.disabled {
+  border-color: #cbd5e1;
+  background: white;
+  color: #64748b;
+}
+
+.password-toggle-inline.enabled:hover:not(:disabled) {
+  transform: translateY(-1px);
+  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
+}
+
+.password-toggle-inline.disabled:hover:not(:disabled) {
+  background: #f9fafb;
+  border-color: #94a3b8;
+}
+
+.password-toggle-inline:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.password-text {
+  font-family: 'Monaco', 'Courier New', monospace;
+  font-size: 0.85rem;
+  font-weight: 700;
+  letter-spacing: 0.15em;
+  color: white;
+  min-width: 45px;
+  text-align: center;
+}
+
+.password-view-inline {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+}
+
+.password-view-inline .password-text {
+  color: #1e293b;
+  padding: 0.3rem 0.6rem;
+  background: #f8fafc;
+  border: 1px solid #cbd5e1;
+  border-radius: 4px;
+}
+
+.password-icon-btn {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0.35rem;
+  background: rgba(255, 255, 255, 0.2);
+  border: 1px solid rgba(255, 255, 255, 0.3);
+  border-radius: 4px;
+  color: white;
+  cursor: pointer;
+  transition: all 0.2s ease;
+}
+
+.password-toggle-inline.disabled + .password-icon-btn,
+.password-view-inline .password-icon-btn {
+  background: white;
+  border-color: #cbd5e1;
+  color: #64748b;
+}
+
+.password-icon-btn:hover {
+  background: rgba(255, 255, 255, 0.3);
+  border-color: rgba(255, 255, 255, 0.5);
+}
+
+.password-toggle-inline.disabled + .password-icon-btn:hover,
+.password-view-inline .password-icon-btn:hover {
+  background: #f1f5f9;
+  border-color: #94a3b8;
+  color: #475569;
+}
+
+.no-password-text {
+  font-size: 0.85rem;
+  color: #94a3b8;
+  font-style: italic;
+}
+
+/* 参会人员 - 行内样式 */
+.meta-item-attendees {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  color: #334155;
+  grid-column: 1 / -1;
+}
+
+.attendees-inline {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 0.25rem;
+  color: #475569;
+}
+
+.attendee-name {
+  color: #475569;
+}
+
+.attendee-count {
+  color: #64748b;
+  font-size: 0.85rem;
+  margin-left: 0.25rem;
+}
+
+/* 旋转动画 */
+@keyframes spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+.spin {
+  animation: spin 1s linear infinite;
 }
\ No newline at end of file
diff --git a/src/pages/MeetingDetails.jsx b/src/pages/MeetingDetails.jsx
index 85d69f7..fb3056c 100644
--- a/src/pages/MeetingDetails.jsx
+++ b/src/pages/MeetingDetails.jsx
@@ -3,7 +3,7 @@ import { useParams, Link, useNavigate, useLocation } from 'react-router-dom';
 import apiClient from '../utils/apiClient';
 import configService from '../utils/configService';
 import tools from '../utils/tools';
-import { ArrowLeft, Clock, Users, User, Calendar, Play, Pause, Volume2, MessageCircle, Edit, Trash2, Settings, Save, X, Edit3, Brain, Sparkles, Download, ArrowDown, RefreshCw, RefreshCwOff, Image, QrCode, MoreVertical, Upload, ChevronLeft, ChevronRight, Loader } from 'lucide-react';
+import { ArrowLeft, Clock, Users, User, Calendar, Play, Pause, Volume2, MessageCircle, Edit, Trash2, Settings, Save, X, Edit3, Brain, Sparkles, Download, ArrowDown, RefreshCw, RefreshCwOff, Image, QrCode, MoreVertical, Upload, ChevronLeft, ChevronRight, Loader, Lock, Unlock, Eye, EyeOff, Copy, Check } from 'lucide-react';
 import ReactMarkdown from 'react-markdown';
 import remarkGfm from 'remark-gfm';
 import rehypeRaw from 'rehype-raw';
@@ -69,6 +69,13 @@ const MeetingDetails = ({ user }) => {
   const [maxFileSize, setMaxFileSize] = useState(100 * 1024 * 1024); // 默认100MB
   const [uploadError, setUploadError] = useState('');
 
+  // 访问密码相关状态
+  const [accessPassword, setAccessPassword] = useState(null);
+  const [passwordEnabled, setPasswordEnabled] = useState(false);
+  const [showPassword, setShowPassword] = useState(false);
+  const [passwordCopied, setPasswordCopied] = useState(false);
+  const [passwordLoading, setPasswordLoading] = useState(false);
+
   // 音频加载状态
   const [audioLoading, setAudioLoading] = useState(true); // 音频是否正在加载
   const [audioCanPlay, setAudioCanPlay] = useState(false); // 音频是否可以播放
@@ -242,7 +249,16 @@ const MeetingDetails = ({ user }) => {
       
       const response = await apiClient.get(`${baseUrl}${detailEndpoint}`);
       setMeeting(response.data);
-      
+
+      // 设置访问密码状态
+      if (response.data.access_password) {
+        setAccessPassword(response.data.access_password);
+        setPasswordEnabled(true);
+      } else {
+        setAccessPassword(null);
+        setPasswordEnabled(false);
+      }
+
       // Handle transcription status from meeting details
       if (response.data.transcription_status) {
         const newStatus = response.data.transcription_status;
@@ -1081,6 +1097,58 @@ const MeetingDetails = ({ user }) => {
     }
   };
 
+  // 访问密码管理函数
+  const generatePassword = () => {
+    // 生成4位混合密码（数字+字母）
+    const chars = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnpqrstuvwxyz23456789';
+    let password = '';
+    for (let i = 0; i < 4; i++) {
+      password += chars.charAt(Math.floor(Math.random() * chars.length));
+    }
+    return password;
+  };
+
+  const handleTogglePassword = async () => {
+    try {
+      setPasswordLoading(true);
+
+      if (passwordEnabled) {
+        // 关闭密码
+        await apiClient.put(buildApiUrl(`/api/meetings/${meeting_id}/access-password`), {
+          password: null
+        });
+        setAccessPassword(null);
+        setPasswordEnabled(false);
+        setShowPassword(false);
+        showToast('访问密码已关闭', 'success');
+      } else {
+        // 生成并开启密码
+        const newPassword = generatePassword();
+        await apiClient.put(buildApiUrl(`/api/meetings/${meeting_id}/access-password`), {
+          password: newPassword
+        });
+        setAccessPassword(newPassword);
+        setPasswordEnabled(true);
+        setShowPassword(true);
+        showToast('访问密码已生成', 'success');
+      }
+    } catch (err) {
+      console.error('密码操作失败:', err);
+      showToast(err.response?.data?.message || '密码操作失败，请重试', 'error');
+    } finally {
+      setPasswordLoading(false);
+    }
+  };
+
+  const handleCopyPassword = () => {
+    if (accessPassword) {
+      navigator.clipboard.writeText(accessPassword);
+      setPasswordCopied(true);
+      showToast('密码已复制到剪贴板', 'success');
+      setTimeout(() => setPasswordCopied(false), 2000);
+    }
+  };
+
   const isCreator = meeting && user && String(meeting.creator_id) === String(user.user_id);
 
   if (loading) {
@@ -1181,12 +1249,12 @@ const MeetingDetails = ({ user }) => {
               <div className="meta-grid">
                 <div className="meta-item">
                   <Calendar size={18} />
-                  <strong>会议日期:</strong>
+                  <strong>日期:</strong>
                   <span>{tools.formatDateTime(meeting.meeting_time).split(' ')[0].slice(2)}</span>
                 </div>
                 <div className="meta-item">
                   <Clock size={18} />
-                  <strong>会议时间:</strong>
+                  <strong>时间:</strong>
                   <span>{tools.formatDateTime(meeting.meeting_time).split(' ')[1]}</span>
                 </div>
                 <div className="meta-item">
@@ -1194,26 +1262,73 @@ const MeetingDetails = ({ user }) => {
                   <strong>创建人:</strong>
                   <span>{meeting.creator_username}</span>
                 </div>
-                <div className="meta-item">
+                <div className="meta-item meta-item-password">
+                  <Lock size={18} />
+                  <strong>访问密码:</strong>
+                  {isCreator ? (
+                    // 创建人：显示开启/关闭按钮
+                    <div className="password-control-inline">
+                      <button
+                        className={`password-toggle-inline ${passwordEnabled ? 'enabled' : 'disabled'}`}
+                        onClick={handleTogglePassword}
+                        disabled={passwordLoading}
+                        title={passwordEnabled ? '点击关闭密码' : '点击开启密码'}
+                      >
+                        {passwordLoading ? (
+                          <Loader size={14} className="spin" />
+                        ) : passwordEnabled ? (
+                          <>
+                            <span className="password-text">{showPassword ? accessPassword : '••••'}</span>
+                          </>
+                        ) : (
+                          <>
+                            <span>开启</span>
+                          </>
+                        )}
+                      </button>
+                      {passwordEnabled && accessPassword && (
+                        <button
+                          className="password-icon-btn"
+                          onClick={() => setShowPassword(!showPassword)}
+                          title={showPassword ? '隐藏密码' : '显示密码'}
+                        >
+                          {showPassword ? <EyeOff size={14} /> : <Eye size={14} />}
+                        </button>
+                      )}
+                    </div>
+                  ) : (
+                    // 非创建人：显示密码或"未设置"
+                    passwordEnabled && accessPassword ? (
+                      <div className="password-view-inline">
+                        <span className="password-text">{showPassword ? accessPassword : '••••'}</span>
+                        <button
+                          className="password-icon-btn"
+                          onClick={() => setShowPassword(!showPassword)}
+                          title={showPassword ? '隐藏密码' : '显示密码'}
+                        >
+                          {showPassword ? <EyeOff size={14} /> : <Eye size={14} />}
+                        </button>
+                      </div>
+                    ) : (
+                      <span className="no-password-text">未设置</span>
+                    )
+                  )}
+                </div>
+                <div className="meta-item meta-item-attendees">
                   <Users size={18} />
-                  <strong>参会人数:</strong>
-                  <span>{meeting.attendees.length}</span>
+                  <strong>参会人员<span className="attendee-count">（{meeting.attendees.length}人）</span>:</strong>
+                  <span className="attendees-inline">
+                    {meeting.attendees.map((attendee, index) => (
+                      <span key={index} className="attendee-name">
+                        {typeof attendee === 'string' ? attendee : attendee.caption}
+                        {index < meeting.attendees.length - 1 && '、'}
+                      </span>
+                    ))}
+                  </span>
                 </div>
               </div>
             </header>
 
-            <section className="card-section">
-              <h2><Users size={20} /> 参会人员</h2>
-              <div className="attendees-list">
-                {meeting.attendees.map((attendee, index) => (
-                  <div key={index} className="attendee-chip">
-                    <User size={16} />
-                    <span>{typeof attendee === 'string' ? attendee : attendee.caption}</span>
-                  </div>
-                ))}
-              </div>
-            </section>
-
             {/* Audio Player Section */}
             <section className="card-section audio-section">
               <div className="section-header-with-menu">
@@ -1718,7 +1833,7 @@ const MeetingDetails = ({ user }) => {
         <div className="summary-modal-overlay" onClick={closeSummaryModal}>
           <div className="summary-modal" onClick={(e) => e.stopPropagation()}>
             <div className="modal-header">
-              <h3><Brain size={20} /> AI会议总结</h3>
+              <h3><Brain size={20} /> AI总结</h3>
               <button 
                 className="close-btn"
                 onClick={closeSummaryModal}
diff --git a/src/pages/MeetingPreview.css b/src/pages/MeetingPreview.css
index 6abf560..8e120b9 100644
--- a/src/pages/MeetingPreview.css
+++ b/src/pages/MeetingPreview.css
@@ -543,3 +543,180 @@
     color: #666;
   }
 }
+
+/* 密码保护界面样式 */
+.password-protection-modal {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  min-height: 80vh;
+}
+
+.password-modal-content {
+  background: white;
+  border-radius: 16px;
+  padding: 48px 40px;
+  max-width: 450px;
+  width: 100%;
+  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
+  text-align: center;
+  border: 1px solid #e5e7eb;
+}
+
+.password-icon-large {
+  width: 80px;
+  height: 80px;
+  margin: 0 auto 24px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 50%;
+  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
+  color: white;
+  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
+}
+
+.password-modal-content h2 {
+  font-size: 24px;
+  font-weight: 600;
+  color: #1e293b;
+  margin-bottom: 12px;
+}
+
+.password-modal-content > p {
+  font-size: 16px;
+  color: #64748b;
+  margin-bottom: 32px;
+}
+
+.password-input-group {
+  position: relative;
+  margin-bottom: 16px;
+}
+
+.password-input {
+  width: 100%;
+  padding: 14px 50px 14px 16px;
+  border: 2px solid #e2e8f0;
+  border-radius: 8px;
+  font-size: 16px;
+  font-family: 'Monaco', 'Courier New', monospace;
+  letter-spacing: 0.3em;
+  text-align: center;
+  transition: all 0.2s ease;
+  box-sizing: border-box;
+}
+
+.password-input:focus {
+  outline: none;
+  border-color: #f59e0b;
+  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
+}
+
+.password-input.error {
+  border-color: #ef4444;
+}
+
+.password-input:disabled {
+  background: #f8fafc;
+  cursor: not-allowed;
+}
+
+.password-toggle-btn {
+  position: absolute;
+  right: 12px;
+  top: 50%;
+  transform: translateY(-50%);
+  background: none;
+  border: none;
+  color: #64748b;
+  cursor: pointer;
+  padding: 8px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 4px;
+  transition: all 0.2s ease;
+}
+
+.password-toggle-btn:hover {
+  background: #f1f5f9;
+  color: #475569;
+}
+
+.password-error-message {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 8px;
+  padding: 12px 16px;
+  background: #fef2f2;
+  border: 1px solid #fecaca;
+  border-radius: 8px;
+  color: #dc2626;
+  font-size: 14px;
+  margin-bottom: 16px;
+}
+
+.password-verify-btn {
+  width: 100%;
+  padding: 14px 24px;
+  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
+  color: white;
+  border: none;
+  border-radius: 8px;
+  font-size: 16px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
+}
+
+.password-verify-btn:hover:not(:disabled) {
+  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
+  transform: translateY(-1px);
+  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
+}
+
+.password-verify-btn:active:not(:disabled) {
+  transform: translateY(0);
+  box-shadow: 0 2px 6px rgba(245, 158, 11, 0.3);
+}
+
+.password-verify-btn:disabled {
+  background: #cbd5e1;
+  cursor: not-allowed;
+  box-shadow: none;
+}
+
+/* 移动端密码界面优化 */
+@media (max-width: 768px) {
+  .password-modal-content {
+    padding: 32px 24px;
+    margin: 0 15px;
+  }
+
+  .password-icon-large {
+    width: 64px;
+    height: 64px;
+  }
+
+  .password-modal-content h2 {
+    font-size: 20px;
+  }
+
+  .password-modal-content > p {
+    font-size: 14px;
+    margin-bottom: 24px;
+  }
+
+  .password-input {
+    padding: 12px 45px 12px 12px;
+    font-size: 14px;
+  }
+
+  .password-verify-btn {
+    padding: 12px 20px;
+    font-size: 15px;
+  }
+}
diff --git a/src/pages/MeetingPreview.jsx b/src/pages/MeetingPreview.jsx
index 34346e2..f7e72fd 100644
--- a/src/pages/MeetingPreview.jsx
+++ b/src/pages/MeetingPreview.jsx
@@ -5,6 +5,7 @@ import remarkGfm from 'remark-gfm';
 import rehypeRaw from 'rehype-raw';
 import rehypeSanitize from 'rehype-sanitize';
 import { Tabs } from 'antd';
+import { Lock, Eye, EyeOff, AlertCircle } from 'lucide-react';
 import MindMap from '../components/MindMap';
 import './MeetingPreview.css';
 
@@ -17,7 +18,21 @@ const MeetingPreview = () => {
   const [error, setError] = useState(null);
   const [errorType, setErrorType] = useState(''); // 'not_found', 'no_summary', 'network'
 
+  // 密码验证相关状态
+  const [isPasswordProtected, setIsPasswordProtected] = useState(false);
+  const [passwordVerified, setPasswordVerified] = useState(false);
+  const [passwordInput, setPasswordInput] = useState('');
+  const [showPassword, setShowPassword] = useState(false);
+  const [passwordError, setPasswordError] = useState('');
+  const [verifyingPassword, setVerifyingPassword] = useState(false);
+
   useEffect(() => {
+    // 检查是否已经验证过密码（使用 sessionStorage）
+    const verifiedKey = `meeting_${meeting_id}_verified`;
+    const isVerified = sessionStorage.getItem(verifiedKey) === 'true';
+    if (isVerified) {
+      setPasswordVerified(true);
+    }
     fetchMeetingPreviewData();
   }, [meeting_id]);
 
@@ -29,7 +44,17 @@ const MeetingPreview = () => {
       const result = await response.json();
 
       if (result.code === "200") {
-        setMeetingData(result.data);
+        // 检查是否需要密码保护 - 优先检查 sessionStorage
+        const verifiedKey = `meeting_${meeting_id}_verified`;
+        const isVerified = sessionStorage.getItem(verifiedKey) === 'true';
+
+        if (result.data.has_password && !isVerified && !passwordVerified) {
+          setIsPasswordProtected(true);
+          setMeetingData(null);
+        } else {
+          setMeetingData(result.data);
+          setIsPasswordProtected(false);
+        }
         setError(null);
         setErrorType('');
       } else if (result.code === "404") {
@@ -51,6 +76,56 @@ const MeetingPreview = () => {
     }
   };
 
+  const handlePasswordVerify = async () => {
+    if (!passwordInput.trim()) {
+      setPasswordError('请输入访问密码');
+      return;
+    }
+
+    setVerifyingPassword(true);
+    setPasswordError('');
+
+    try {
+      const response = await fetch(`/api/meetings/${meeting_id}/verify-password`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({ password: passwordInput }),
+      });
+
+      const result = await response.json();
+
+      if (result.code === "200" && result.data.verified) {
+        // 验证成功
+        setPasswordVerified(true);
+        setIsPasswordProtected(false);
+        setPasswordInput('');
+        setPasswordError('');
+
+        // 保存验证状态到 sessionStorage
+        const verifiedKey = `meeting_${meeting_id}_verified`;
+        sessionStorage.setItem(verifiedKey, 'true');
+
+        // 重新获取会议数据
+        fetchMeetingPreviewData();
+      } else {
+        setPasswordError('密码错误，请重试');
+      }
+    } catch (err) {
+      console.error('验证密码失败:', err);
+      setPasswordError('验证失败，请重试');
+    } finally {
+      setVerifyingPassword(false);
+    }
+  };
+
+  const handleKeyPress = (e) => {
+    if (e.key === 'Enter') {
+      handlePasswordVerify();
+    }
+  };
+
   const formatDateTime = (dateTime) => {
     if (!dateTime) return '';
     const date = new Date(dateTime);
@@ -76,6 +151,59 @@ const MeetingPreview = () => {
     );
   }
 
+  // 如果需要密码验证，显示密码输入界面
+  if (isPasswordProtected && !passwordVerified) {
+    return (
+      <div className="preview-container">
+        <div className="password-protection-modal">
+          <div className="password-modal-content">
+            <div className="password-icon-large">
+              <Lock size={48} />
+            </div>
+            <h2>此会议需要访问密码</h2>
+            <p>请输入密码以查看会议总结</p>
+
+            <div className="password-input-group">
+              <input
+                type={showPassword ? "text" : "password"}
+                value={passwordInput}
+                onChange={(e) => setPasswordInput(e.target.value)}
+                onKeyPress={handleKeyPress}
+                placeholder="请输入4位访问密码"
+                className={`password-input ${passwordError ? 'error' : ''}`}
+                disabled={verifyingPassword}
+                maxLength={4}
+                autoFocus
+              />
+              <button
+                className="password-toggle-btn"
+                onClick={() => setShowPassword(!showPassword)}
+                type="button"
+              >
+                {showPassword ? <EyeOff size={20} /> : <Eye size={20} />}
+              </button>
+            </div>
+
+            {passwordError && (
+              <div className="password-error-message">
+                <AlertCircle size={16} />
+                <span>{passwordError}</span>
+              </div>
+            )}
+
+            <button
+              className="password-verify-btn"
+              onClick={handlePasswordVerify}
+              disabled={verifyingPassword || !passwordInput.trim()}
+            >
+              {verifyingPassword ? '验证中...' : '验证密码'}
+            </button>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
   if (error) {
     return (
       <div className="preview-container">