diff --git a/webapp/controller/ShopController.class.php b/webapp/controller/ShopController.class.php
index 317b2942..2483f5b1 100644
--- a/webapp/controller/ShopController.class.php
+++ b/webapp/controller/ShopController.class.php
@@ -189,6 +189,18 @@ class ShopController extends BaseAuthedController {
             $this->_rspErr(1, 'config error token_type');
             return;
         }
+        if ($goodsMeta['price'] < 0.0001) {
+            $this->_rspErr(1, 'config error price');
+            return;
+        }
+        if (!$fiat != 'USD') {
+            $this->_rspErr(1, 'paramater error fiat');
+            return;
+        }
+        if (!$fiatAmount != 'USD') {
+            $this->_rspErr(1, 'paramater error fiatAmount');
+            return;
+        }
     }
 
     public function queryInAppBalance()