diff --git a/doc/Shop.py b/doc/Shop.py
index 060283a8..dce3005d 100644
--- a/doc/Shop.py
+++ b/doc/Shop.py
@@ -50,5 +50,51 @@ class Shop(object):
                     ['!items', [0], '宝箱物品列表'],
                     ['free_num', 0, '免费次数'],
                 ]
-            }
+            },
+            {
+                'name': 'queryInAppBalance',
+                'desc': '查询当天内购限制余额',
+                'group': 'Shop',
+                'url': 'webapp/index.php?c=Shop&a=queryInAppBalance',
+                'params': [
+                    _common.ReqHead(),
+                ],
+                'response': [
+                    _common.RspHead(),
+                    ['balance', '', '美元'],
+                ]
+            },
+            {
+                'name': 'inappPurchase',
+                'desc': '发起一个内购(购买钻石)',
+                'group': 'Shop',
+                'url': 'webapp/index.php?c=Shop&a=inappPurchase',
+                'params': [
+                    _common.ReqHead(),
+                    ['goods_id', '', '商品唯一id'],
+                    ['goods_num', 0, '商品数量'],
+                    ['platform', 0, '平台 1：android 2：ios'],
+                ],
+                'response': [
+                    _common.RspHead(),
+                    ['order_id', '', '订单id'],
+                ]
+            },
+            {
+                'name': 'queryInAppPurchase',
+                'desc': '查询内购(购买钻石)状态',
+                'group': 'Shop',
+                'url': 'webapp/index.php?c=Shop&a=queryInAppPurchase',
+                'params': [
+                    _common.ReqHead(),
+                    ['order_id', '', '订单id'],
+                ],
+                'response': [
+                    _common.RspHead(),
+                    ['order_id', '', '订单id'],
+                    ['item_id', '', '商品id'],
+                    ['item_num', 0, '商品数量'],
+                    ['status', 0, '订单状态 0:未支付 1:已支付 2:支付失败'],
+                ]
+            },
         ]
diff --git a/webapp/controller/ShopController.class.php b/webapp/controller/ShopController.class.php
index 6cc46eb8..14bb9908 100644
--- a/webapp/controller/ShopController.class.php
+++ b/webapp/controller/ShopController.class.php
@@ -197,7 +197,7 @@ class ShopController extends BaseAuthedController {
     }
 
 
-public function inappPurchase()
+    public function inappPurchase()
     {
         $goodsId = getReqVal('goods_id', 0);
         $goodsNum = getReqVal('goods_num', 0);