diff --git a/index.html b/index.html
index 5a537b3..569836a 100644
--- a/index.html
+++ b/index.html
@@ -80,6 +80,7 @@
     <b>调试日志</b>
     <span id="dbgCount"></span>
     <span>
+      <button id="dbgCopy">复制</button>
       <button id="dbgClear">清空</button>
       <button id="dbgClose">收起</button>
     </span>
@@ -134,6 +135,56 @@
   el('dbgClose').addEventListener('click', function () { el('dbgPanel').classList.remove('open'); });
   el('dbgClear').addEventListener('click', function () { el('dbgLog').innerHTML = ''; dbgCount = 0; el('dbgCount').textContent = ''; });
 
+  // 复制日志：拼纯文本（时间 + 内容），Clipboard API 优先，失败/不可用则降级 execCommand
+  function copyWithFallback(text) {
+    try {
+      var ta = document.createElement('textarea');
+      ta.value = text; ta.style.position = 'fixed'; ta.style.opacity = '0';
+      document.body.appendChild(ta); ta.select();
+      var ok2 = document.execCommand('copy');
+      document.body.removeChild(ta);
+      return !!ok2;
+    } catch (e) {
+      return false;
+    }
+  }
+  // 终极大兜底：两种 API 都失败时，弹出一个可全选/长按的文本区让用户手动复制
+  function manualCopy(text) {
+    dbg('自动复制不可用，弹出文本区请长按/全选复制 ↓', 'warn');
+    var box = el('dbgManual');
+    if (!box) {
+      box = document.createElement('div');
+      box.id = 'dbgManual';
+      box.style.cssText = 'position:fixed;left:10px;right:10px;top:10px;z-index:300;background:#fff;border:2px solid #F4593C;border-radius:12px;padding:10px;box-shadow:0 6px 20px rgba(0,0,0,.3);max-height:70vh;display:flex;flex-direction:column';
+      box.innerHTML = '<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:6px">' +
+        '<b style="color:#F4593C;font-size:13px">手动复制日志</b>' +
+        '<button id="dbgManualClose" style="border:1px solid #ddd;background:#fff;border-radius:6px;padding:2px 10px">关闭</button></div>' +
+        '<textarea id="dbgManualText" style="flex:1;width:100%;min-height:180px;border:1px solid #eee;border-radius:8px;padding:8px;font-family:Menlo,Consolas,monospace;font-size:12px" readonly>' +
+        text.replace(/</g, '&lt;').replace(/>/g, '&gt;') + '</textarea>' +
+        '<div style="font-size:11px;color:#999;margin-top:6px">提示：微信里长按文本 → 全选 → 复制。</div>';
+      document.body.appendChild(box);
+      el('dbgManualClose').addEventListener('click', function () { box.parentNode.removeChild(box); });
+      var t = el('dbgManualText');
+      setTimeout(function () { t.focus(); t.select(); }, 300);
+    }
+  }
+  el('dbgCopy').addEventListener('click', function () {
+    var text = '';
+    var lns = el('dbgLog').querySelectorAll('.ln');
+    for (var i = 0; i < lns.length; i++) {
+      var t = (lns[i].querySelector('b') ? lns[i].querySelector('b').textContent : '');
+      text += t + ' ' + lns[i].textContent.replace(t, '').trim() + '\n';
+    }
+    text = '[wx-h5-demo 调试日志 v' + VER + ']\n' + text;
+    function ok() { dbg('已复制 ' + lns.length + ' 条日志到剪贴板', 'ok'); }
+    function fallback() { if (copyWithFallback(text)) ok(); else manualCopy(text); }
+    if (navigator.clipboard && navigator.clipboard.writeText) {
+      navigator.clipboard.writeText(text).then(ok, function () { fallback(); });
+    } else {
+      fallback();
+    }
+  });
+
   function show(tag, title) {
     el('envTag').textContent = title; el('envTag').className = 'tag ' + (tag === 'ok' ? 'ok' : 'no');
   }