diff --git a/src/main/java/com/yn/bftl/thirdparty/common/service/impl/ByxTradeWayServiceImpl.java b/src/main/java/com/yn/bftl/thirdparty/common/service/impl/ByxTradeWayServiceImpl.java
index d92ab81..a6bc420 100644
--- a/src/main/java/com/yn/bftl/thirdparty/common/service/impl/ByxTradeWayServiceImpl.java
+++ b/src/main/java/com/yn/bftl/thirdparty/common/service/impl/ByxTradeWayServiceImpl.java
@@ -39,7 +39,7 @@
         String plugRandKey = randomKeyService.getOneKey();
         String signSource = walletId + "," + plugRandKey;
         tradeWayFields.put("plugRandomKey", plugRandKey);
-        tradeWayFields.put("certSign", CryptoUtils.sign("SHA256withRSA", signSource, byxChinaumsUtil.getPrivateKey(), "UTF-8"));
+        tradeWayFields.put("certSign", CryptoUtils.sign("SHA256withRSA", signSource, byxChinaumsUtil.getTransactionPrivateKey(), "UTF-8"));
         param.setTradeWayFeilds(JSON.toJSONString(tradeWayFields));
     }
 
@@ -49,6 +49,6 @@
         String plugRandKey = randomKeyService.getOneKey();
         String signSource = walletId + "," + plugRandKey;
         param.setPlugRandomKey(plugRandKey);
-        param.setCertSign(CryptoUtils.sign("SHA256withRSA", signSource, byxChinaumsUtil.getPrivateKey(), "UTF-8"));
+        param.setCertSign(CryptoUtils.sign("SHA256withRSA", signSource, byxChinaumsUtil.getTransactionPrivateKey(), "UTF-8"));
     }
 }