diff --git a/api/config.js b/api/config.js
index 7f4d6c59..109b5bad 100644
--- a/api/config.js
+++ b/api/config.js
@@ -52,7 +52,7 @@ const product = {
                     accessKey: QINIU_AK,
                     secretKey: QINIU_SK
                 },
-                maxSize: 104857600, // 100M
+                maxSize: 104857600 * 2, // 100M * 2
             }
         }, {
             entry: require('./app').entry,