diff --git a/src/wallet/BitgetWallet.js b/src/wallet/BitgetWallet.js
index b2998e2..b31f014 100644
--- a/src/wallet/BitgetWallet.js
+++ b/src/wallet/BitgetWallet.js
@@ -4,6 +4,7 @@ import { apiPreRecharge } from "./../utils/request.js"
 import { switchEthereumChain, queryAllowance } from './utils.js'
 import { FirebaseUtil } from "@/utils/firebase.util";
 
+const USDT_EHTEREUM = '0xdac17f958d2ee523a2206206994597c13d831ec7'
 export class BitgetWallet{
   constructor() {
     if (BitgetWallet.instance) {
@@ -84,10 +85,19 @@ export class BitgetWallet{
     let user = data.account_address
     if (calls.length > 1) {
       const contractAddress = calls[1].trans_req.to
+
       // get calls[1].data last 32 bytes
       const amount = BigInt(parseInt(calls[0].trans_req.data.slice(-64), 16))
       let allowance = await queryAllowance(provider, calls[0].trans_req.to, user, contractAddress)
-      if (allowance < amount) {
+      if (calls[0].trans_req.to.toLowerCase() == USDT_EHTEREUM && allowance != amount) {
+        if (allowance != BigInt(0)) {
+          // replace calls[0].trans_req.data last 32 bytes to 0
+          let data = calls[0].trans_req.data.slice(0, -64) + '0'.repeat(64)
+          await this.sendTransaction(provider, {from: user, to: calls[0].trans_req.to, data})
+        }
+        let hash = await this.sendTransaction(provider, {from: user, to: calls[0].trans_req.to, data: calls[0].trans_req.data})
+        resutls.push(hash)
+      } else if (allowance < amount) {
         let hash = await this.sendTransaction(provider, {from: user, to: calls[0].trans_req.to, data: calls[0].trans_req.data})
         resutls.push(hash)
       }