diff --git a/plugins/Common.php b/plugins/Common.php
index 55862bb..a64dd16 100644
--- a/plugins/Common.php
+++ b/plugins/Common.php
@@ -585,11 +585,11 @@ Class Common {
         $date = '';
 
         try {
-            preg_match('/^.*(\d{4}[012]{2}\d{2}).*$/', $str, $matches);     //尝试Y-m-d格式的日期
+            preg_match('/^.*([1920]\d{3}[012][0-9][0123]\d).*$/U', $str, $matches);     //尝试Y-m-d格式的日期
             if (empty($matches[1])) {                                       //再尝试单位秒的时间戳
-                preg_match('/^.*(\d{10}).*$/', $str, $matches);
+                preg_match('/^.*(\d{10}).*$/U', $str, $matches);
                 if (empty($matches[1])) {
-                    preg_match('/^.*(\d{13}).*$/', $str, $matches);         //单位毫秒的时间戳
+                    preg_match('/^.*(\d{13}).*$/U', $str, $matches);         //单位毫秒的时间戳
                     if (!empty($matches[1])) {
                         $date = date('Y-m-d', (int)$matches[1] / 1000);
                     }