diff --git a/Application/Common/Common/extend.php b/Application/Common/Common/extend.php
index 8d9b15e40..476064d0d 100644
--- a/Application/Common/Common/extend.php
+++ b/Application/Common/Common/extend.php
@@ -1102,15 +1102,17 @@ function getGameSelleRatioByPromote($promoteId = null, $gameId = null)
     if (empty($promoteId) || empty($gameId)) {
         return false;
     }
+
     $promoteId = intval($promoteId);
     $gameId = intval($gameId);
     $promote = M('promote', 'tab_')->find($promoteId);
+
     if (empty($promote)) {
         return false;
     }
     if ($promote['level'] != 1) {
-        $promoteId = explode('/', trim($promote['chain'], '/'))[0];
-        $promoteId = intval($promoteId);
+        $chain = explode('/', trim($promote['chain'], '/'));
+        $promoteId = empty($chain[0]) ? 0 : intval($chain[0]);
     }
 
     $map['promote_id'] = $promoteId;