diff --git a/src/api/debug.js b/src/api/debug.js
index 1adff08..7aa69b7 100644
--- a/src/api/debug.js
+++ b/src/api/debug.js
@@ -38,7 +38,7 @@ async function handleDebug(request, env) {
   <div class="info">
     <h3>配置信息</h3>
     <p class="${debugInfo.configExists ? 'success' : 'error'}">配置存在: ${debugInfo.configExists ? '✓' : '✗'}</p>
-    <p>管理员用户名: ${debugInfo.adminUsername}</p>
+    <p>管理员用户名: ${String(debugInfo.adminUsername || '').replace(/</g, '&lt;').replace(/>/g, '&gt;')}</p>
     <p class="${debugInfo.hasJwtSecret ? 'success' : 'error'}">JWT密钥: ${debugInfo.hasJwtSecret ? '✓' : '✗'} (长度: ${debugInfo.jwtSecretLength})</p>
   </div>
 
diff --git a/src/views/adminPage.html b/src/views/adminPage.html
index 19a09c1..04fbf2d 100644
--- a/src/views/adminPage.html
+++ b/src/views/adminPage.html
@@ -734,6 +734,12 @@
       return response;
     }
 
+    // HTML 转义，防止 XSS
+    function escapeHtml(str) {
+      if (!str) return '';
+      return String(str).replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;').replace(/'/g,'&#39;');
+    }
+
     // 农历转换工具函数 - 前端版本
     const lunarCalendar = {
       // 农历数据 (1900-2100年)
@@ -1039,7 +1045,8 @@ const lunarBiz = {
                    type === 'error' ? 'exclamation-circle' :
                    type === 'warning' ? 'exclamation-triangle' : 'info-circle';
       
-      toast.innerHTML = '<div class="flex items-center"><i class="fas fa-' + icon + ' mr-2"></i><span>' + message + '</span></div><span class="toast-close" onclick="this.parentElement.remove()">&times;</span>';
+      toast.innerHTML = '<div class="flex items-center"><i class="fas fa-' + icon + ' mr-2"></i><span class="toast-msg"></span></div><span class="toast-close" onclick="this.parentElement.remove()">&times;</span>';
+      toast.querySelector('.toast-msg').textContent = message;
       
       container.appendChild(toast);
       setTimeout(() => toast.classList.add('show'), 50);
@@ -1147,12 +1154,12 @@ const lunarBiz = {
     // 创建带悬浮提示的文本元素
     function createHoverText(text, maxLength = 30, className = 'text-sm text-gray-900') {
       if (!text || text.length <= maxLength) {
-        return '<div class="' + className + '">' + text + '</div>';
+        return '<div class="' + className + '">' + escapeHtml(text) + '</div>';
       }
 
-      const truncated = text.substring(0, maxLength) + '...';
+      const truncated = escapeHtml(text.substring(0, maxLength)) + '...';
       return '<div class="hover-container">' +
-        '<div class="hover-text ' + className + '" data-full-text="' + text.replace(/"/g, '&quot;') + '">' +
+        '<div class="hover-text ' + className + '" data-full-text="' + escapeHtml(text) + '">' +
           truncated +
         '</div>' +
         '<div class="hover-tooltip"></div>' +
@@ -1778,7 +1785,7 @@ const lunarBiz = {
             '    <div class="relative top-20 mx-auto p-5 border w-full max-w-md shadow-lg rounded-md bg-white" onclick="event.stopPropagation()">' +
             '        <div class="flex justify-between items-center pb-3 border-b">' +
             '            <h3 class="text-xl font-semibold text-gray-900">' +
-            '                <i class="fas fa-sync-alt mr-2"></i>手动续订 - ' + subscription.name +
+            '                <i class="fas fa-sync-alt mr-2"></i>手动续订 - ' + escapeHtml(subscription.name) +
             '            </h3>' +
             '            <button onclick="closeRenewFormModal()" class="text-gray-400 hover:text-gray-500">' +
             '                <i class="fas fa-times text-2xl"></i>' +
@@ -2035,7 +2042,7 @@ const lunarBiz = {
                     periodHtml = '<div class="mt-1 ml-6 text-xs text-gray-500"><i class="fas fa-clock mr-1"></i>计费周期: ' + startStr + ' - ' + endStr + '</div>';
                 }
 
-                const noteHtml = payment.note ? '<div class="mt-1 ml-6 text-sm text-gray-600">' + payment.note + '</div>' : '';
+                const noteHtml = payment.note ? '<div class="mt-1 ml-6 text-sm text-gray-600">' + escapeHtml(payment.note) + '</div>' : '';
                 const paymentDataJson = JSON.stringify(payment).replace(/"/g, '&quot;');
                 return `
                     <div class="border-b border-gray-200 py-3 hover:bg-gray-50">
@@ -2077,7 +2084,7 @@ const lunarBiz = {
                 <div class="relative top-20 mx-auto p-5 border w-full max-w-2xl shadow-lg rounded-md bg-white" onclick="event.stopPropagation()">
                     <div class="flex justify-between items-center pb-3 border-b">
                         <h3 class="text-xl font-semibold text-gray-900">
-                            <i class="fas fa-history mr-2"></i>${subscription.name} - 支付历史
+                            <i class="fas fa-history mr-2"></i>${escapeHtml(subscription.name)} - 支付历史
                         </h3>
                         <button onclick="closePaymentHistoryModal()" class="text-gray-400 hover:text-gray-500">
                             <i class="fas fa-times text-2xl"></i>
@@ -2193,7 +2200,7 @@ const lunarBiz = {
                     <form id="editPaymentForm" class="mt-4 space-y-4">
                         <div>
                             <label class="block text-sm font-medium text-gray-700 mb-1">订阅名称</label>
-                            <input type="text" value="${subscription.name}" disabled
+                            <input type="text" value="${escapeHtml(subscription.name)}" disabled
                                    class="w-full px-3 py-2 border border-gray-300 rounded-md bg-gray-100">
                         </div>
 
@@ -2211,7 +2218,7 @@ const lunarBiz = {
 
                         <div>
                             <label class="block text-sm font-medium text-gray-700 mb-1">备注</label>
-                            <input type="text" id="editPaymentNote" value="${payment.note || ''}"
+                            <input type="text" id="editPaymentNote" value="${escapeHtml(payment.note || '')}"
                                    class="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-indigo-500 focus:border-indigo-500">
                         </div>
 
diff --git a/src/views/configPage.html b/src/views/configPage.html
index a13a68e..992c0ce 100644
--- a/src/views/configPage.html
+++ b/src/views/configPage.html
@@ -643,7 +643,8 @@
                    type === 'error' ? 'exclamation-circle' :
                    type === 'warning' ? 'exclamation-triangle' : 'info-circle';
       
-      toast.innerHTML = '<div class="flex items-center"><i class="fas fa-' + icon + ' mr-2"></i><span>' + message + '</span></div><span class="toast-close" onclick="this.parentElement.remove()">&times;</span>';
+      toast.innerHTML = '<div class="flex items-center"><i class="fas fa-' + icon + ' mr-2"></i><span class="toast-msg"></span></div><span class="toast-close" onclick="this.parentElement.remove()">&times;</span>';
+      toast.querySelector('.toast-msg').textContent = message;
       
       container.appendChild(toast);
       setTimeout(() => toast.classList.add('show'), 50);