diff --git a/app/Http/Controllers/Admin/StatisticsController.php b/app/Http/Controllers/Admin/StatisticsController.php
index 15ee1b4..a66dc10 100755
--- a/app/Http/Controllers/Admin/StatisticsController.php
+++ b/app/Http/Controllers/Admin/StatisticsController.php
@@ -57,7 +57,7 @@ class StatisticsController extends CommonController
 
     public function _getMonths()
     {
-        $months = [];
+        $months[] = ['-1'=>'全部'];
         for ($i = 1; $i <= 12; $i++) {
             $mm = $i < 10 ? "0" . $i : $i;
             $months[] = (date("Y") - 2) . "-" . $mm;