diff --git a/unipay/providers/wechat.py b/unipay/providers/wechat.py
index a3f6dd0..d231817 100644
--- a/unipay/providers/wechat.py
+++ b/unipay/providers/wechat.py
@@ -148,11 +148,11 @@ class WechatGateway(Gateway):
 		body = {
 			"appid": self.appid,
 			"mchid": self.mchid,
-			"description": payload["subject"],
+			"description": payload.get("subject") or payload.get("payment_name", "充值"),
 			"out_trade_no": payload["out_trade_no"],
 			"notify_url": payload["notify_url"],
 			"amount": {
-				"total": int(payload["amount"]),
+				"total": int(payload["amount"] * 100),
 				"currency": payload.get("currency", "CNY")
 			},
 			"scene_info": {