diff --git a/models/payfee.xlsx b/models/payfee.xlsx
new file mode 100644
index 0000000..8530475
Binary files /dev/null and b/models/payfee.xlsx differ
diff --git a/unipay/init.py b/unipay/init.py
index afffbcb..7f75124 100644
--- a/unipay/init.py
+++ b/unipay/init.py
@@ -4,6 +4,7 @@ from appPublic.log import debug,exception
 from ahserver.serverenv import ServerEnv
 from .notify import get_provider, get_provider_channel
 from .paylog import PaymentLog
+from .payfee import get_pay_fee, sor_get_pay_fee
 
 # 从 env 或配置载入 provider conf（这里只示例）
 CONF = {
@@ -139,4 +140,7 @@ def load_unipay():
 	env.create_payment = create_payment
 	env.query_payment = query_payment
 	env.refund_payment = refund_payment
+	env.get_pay_fee = get_pay_fee
+	env.sor_get_pay_fee = sor_get_pay_fee
+
 
diff --git a/unipay/payfee.py b/unipay/payfee.py
new file mode 100644
index 0000000..b69fda1
--- /dev/null
+++ b/unipay/payfee.py
@@ -0,0 +1,18 @@
+# payfee
+from ahserver.serverenv import ServerEnv
+from sqlor.dbpools import DBPools
+async def get_pay_fee(providerid, amount):
+	db = DBPools()
+	env = ServerEnv()
+	dbname = env.get_module_dbname('unipay')
+	async with db.sqlorContext(dbname) as sor:
+		return await sor_get_pay_fee(sor, providerid, amount)
+	return None
+
+async def sor_get_pay_fee(sor, providerid, amount):
+	sql = """select * from payfee where id=${providerid}$"""
+	recs = await sor.sqlExe(sql, {'id': providerid})
+	if len(recs) < 1:
+		return None
+	return amount * recs[0].fee_rate * amount
+