diff --git a/app/common.php b/app/common.php
index 8abf212..03b1072 100644
--- a/app/common.php
+++ b/app/common.php
@@ -58,10 +58,10 @@ if (!function_exists('sysConfig')) {
             if (!empty($name)) {
                 $where['name'] = $name;
                 $value         = \app\admin\model\SystemConfig::where($where)->value('value');
-                Cache::tag('sysConfig')->set("sysConfig_{$group}_{$name}", $value, 3600);
-            }else {
+                if (!empty($value) || $value >= 0) Cache::tag('sysConfig')->set("sysConfig_{$group}_{$name}", $value, 3600);
+            } else {
                 $value = \app\admin\model\SystemConfig::where($where)->column('value', 'name');
-                Cache::tag('sysConfig')->set("sysConfig_{$group}", $value, 3600);
+                if (!empty($value) || $value >= 0) Cache::tag('sysConfig')->set("sysConfig_{$group}", $value, 3600);
             }
         }
         return $value;