diff --git a/application/admin/model/History.php b/application/admin/model/History.php
index 305ec16..70d4c41 100644
--- a/application/admin/model/History.php
+++ b/application/admin/model/History.php
@@ -370,12 +370,15 @@ class History extends Model
      */
     public function getSpecialTrend($periods = 30)
     {
-        $history = $this->field('expect,num7')->order('openTime', 'asc')->limit($periods)->select();
-        if (empty($history)) return ['expects' => [], 'specials' => [], 'colors' => []];
-
         $num_model = new Num();
         $colorMap = $num_model->column('color', 'num');
 
+        // 先取最近 $periods 条数据
+        $history = $this->field('expect,num7,openTime')->order('openTime', 'desc')->limit($periods)->select();
+        if (empty($history)) return ['expects' => [], 'specials' => [], 'colors' => []];
+
+        // 反转，使数据从左到右为从远到近
+        $history = array_reverse($history);
         $expects = []; $specials = []; $colors = [];
         foreach ($history as $row) {
             $expects[] = (string)$row['expect'];