diff --git a/app.py b/app.py
index 4fb1ca8..e83c4f6 100644
--- a/app.py
+++ b/app.py
@@ -861,6 +861,16 @@ def update_settings():
             user.phone = phone
             user.phone_verified = False
     
+    # 通知邮箱（更换后邮件通知发送到此邮箱）
+    if 'email' in data:
+        email = data.get('email', '')
+        if email and '@' in email:
+            # 检查邮箱是否已被其他用户使用
+            existing = User.query.filter(User.email == email, User.id != user.id).first()
+            if existing:
+                return jsonify({'error': '该邮箱已被其他用户使用'}), 400
+            user.email = email
+    
     # 通知设置
     if 'notify_on_complete' in data:
         user.notify_on_complete = data.get('notify_on_complete', True)
diff --git a/templates/profile.html b/templates/profile.html
index 0724237..841ddcb 100644
--- a/templates/profile.html
+++ b/templates/profile.html
@@ -186,20 +186,32 @@
                     <!-- 邮件通知设置 -->
                     <div class="col-md-6 mb-3">
                         <div class="border rounded p-3">
-                            <h6 class="mb-3">📧 邮件通知</h6>
-                            <div class="form-check mb-2">
-                                <input class="form-check-input" type="checkbox" id="notifyComplete" 
-                                       {% if user.notify_on_complete %}checked{% endif %}
-                                       onchange="updateNotifySettings()">
-                                <label class="form-check-label">翻译完成通知（含附件）</label>
+                            <h6 class="mb-3">📧 通知邮箱</h6>
+                            <div id="emailStatus">
+                                {% if user.email %}
+                                <p class="mb-2">当前通知邮箱：<strong>{{ user.email }}</strong></p>
+                                <button class="btn btn-outline-secondary btn-sm mb-3" onclick="showEmailModal()">更换通知邮箱</button>
+                                {% else %}
+                                <p class="text-muted">未设置通知邮箱</p>
+                                <button class="btn btn-primary btn-sm" onclick="showEmailModal()">绑定邮箱</button>
+                                {% endif %}
+                                
+                                <hr class="my-2">
+                                
+                                <div class="form-check mb-2">
+                                    <input class="form-check-input" type="checkbox" id="notifyComplete" 
+                                           {% if user.notify_on_complete %}checked{% endif %}
+                                           onchange="updateNotifySettings()">
+                                    <label class="form-check-label">翻译完成通知（含附件）</label>
+                                </div>
+                                <div class="form-check mb-2">
+                                    <input class="form-check-input" type="checkbox" id="notifyExpire"
+                                           {% if user.notify_on_expire %}checked{% endif %}
+                                           onchange="updateNotifySettings()">
+                                    <label class="form-check-label">会员到期提醒</label>
+                                </div>
+                                <small class="text-muted">通知将发送至上述邮箱</small>
                             </div>
-                            <div class="form-check mb-2">
-                                <input class="form-check-input" type="checkbox" id="notifyExpire"
-                                       {% if user.notify_on_expire %}checked{% endif %}
-                                       onchange="updateNotifySettings()">
-                                <label class="form-check-label">会员到期提醒</label>
-                            </div>
-                            <small class="text-muted">通知发送至：{{ user.email }}</small>
                         </div>
                     </div>
                 </div>
@@ -334,6 +346,33 @@
         </div>
     </div>
 
+    <!-- 更换邮箱模态框 -->
+    <div class="modal fade" id="emailModal" tabindex="-1">
+        <div class="modal-dialog">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h5 class="modal-title">更换通知邮箱</h5>
+                    <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+                </div>
+                <div class="modal-body">
+                    <form id="emailForm">
+                        <div class="mb-3">
+                            <label class="form-label">新邮箱地址</label>
+                            <input type="email" class="form-control" id="newEmail" placeholder="example@email.com" required>
+                        </div>
+                        <div class="alert alert-info">
+                            <small>💡 更换后，通知邮件将发送至新邮箱</small>
+                        </div>
+                    </form>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
+                    <button type="button" class="btn btn-primary" onclick="submitEmail()">确认更换</button>
+                </div>
+            </div>
+        </div>
+    </div>
+
     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
     <script>
         // 加载账户流水
@@ -527,6 +566,35 @@
                 alert('手机号格式不正确');
             }
         }
+        
+        // 更换邮箱
+        function showEmailModal() {
+            new bootstrap.Modal(document.getElementById('emailModal')).show();
+        }
+        
+        function submitEmail() {
+            const newEmail = document.getElementById('newEmail').value;
+            
+            if (!newEmail || !newEmail.includes('@')) {
+                alert('请输入有效的邮箱地址');
+                return;
+            }
+            
+            fetch('/api/profile/settings', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ email: newEmail })
+            })
+            .then(r => r.json())
+            .then(data => {
+                if (data.success) {
+                    alert('通知邮箱已更新为：' + newEmail);
+                    location.reload();
+                } else {
+                    alert('更新失败：' + data.error);
+                }
+            });
+        }
     </script>
 </body>
 </html>
\ No newline at end of file