diff --git a/src/common/constant.js b/src/common/constant.js
index 6642841..6c73706 100644
--- a/src/common/constant.js
+++ b/src/common/constant.js
@@ -2,5 +2,5 @@
 
 module.exports = {
     USDTAddr: '0xdac17f958d2ee523a2206206994597c13d831ec7',
-    startBlock: 6327420
+    startBlock: 8510200
 };
\ No newline at end of file
diff --git a/src/utils/erc20.js b/src/utils/erc20.js
index 8ad5b32..802b55b 100644
--- a/src/utils/erc20.js
+++ b/src/utils/erc20.js
@@ -5,7 +5,7 @@
 const axios = require('axios');
 const crypto = require('./crypto');
 const ethers = require('ethers');
-const ethio = require('etherscan-api').init('E3ZFFAEMNN33KX4HHVUZ4KF8XY1FXMR4BI', 'ropsten');
+const ethio = require('etherscan-api').init('E3ZFFAEMNN33KX4HHVUZ4KF8XY1FXMR4BI');
 
 require('setimmediate');