diff --git a/src/flexible.js b/src/flexible.js
index 4e7c545..ed9ff7a 100644
--- a/src/flexible.js
+++ b/src/flexible.js
@@ -3,6 +3,8 @@
     var docEl = doc.documentElement;
     var metaEl = doc.querySelector('meta[name="viewport"]');
     var flexibleEl = doc.querySelector('meta[name="flexible"]');
+    var maxWidthEl = doc.querySelector('meta[name="max-width"]');
+    var maxWidth = 540;
     var dpr = 0;
     var scale = 0;
     var tid;
@@ -31,6 +33,13 @@
         }
     }
 
+    if (maxWidthEl) {
+        var maxWidthContent = maxWidthEl.getAttribute('content');
+        if (maxWidthContent) {
+            maxWidth = parseInt(maxWidthContent);
+        }
+    }
+
     if (!dpr && !scale) {
         var isAndroid = win.navigator.appVersion.match(/android/gi);
         var isIPhone = win.navigator.appVersion.match(/iphone/gi);
@@ -67,8 +76,8 @@
 
     function refreshRem(){
         var width = docEl.getBoundingClientRect().width;
-        if (width / dpr > 540) {
-            width = 540 * dpr;
+        if (width / dpr > maxWidth) {
+            width = maxWidth * dpr;
         }
         var rem = width / 10;
         docEl.style.fontSize = rem + 'px';
@@ -114,4 +123,4 @@
         return val;
     }
 
-})(window, window['lib'] || (window['lib'] = {}));
\ No newline at end of file
+})(window, window['lib'] || (window['lib'] = {}));