diff --git a/src/components/chain/BlockChain.js b/src/components/chain/BlockChain.js
index 090dc4e..78b9f32 100644
--- a/src/components/chain/BlockChain.js
+++ b/src/components/chain/BlockChain.js
@@ -8,6 +8,7 @@ import {isTokenExpired, genRefreshToken, cfgChainId, switchEthereumChain} from "
 import {ImtblMarket} from "@/components/chain/Market";
 import { ALL_PROVIDERS } from "@/configs/configchain";
 import {Locker} from "@/components/chain/contract/Locker";
+import {GameItemMall} from "@/components/chain/contract/GameItemMall";
 import ConfirmDialog from "@/components/Dialogs/confirmDialog.vue";
 import { Widgets } from "./Widgets";
 
@@ -28,6 +29,7 @@ export class BlockChain {
     this.initWallet();
     this.market = new ImtblMarket(this)
     this.locker = new Locker(this)
+    this.mall = new GameItemMall(this)
     this.widgets = new Widgets(this)
     BlockChain.instance = this;
     
diff --git a/src/components/chain/contract/GameItemMall.js b/src/components/chain/contract/GameItemMall.js
new file mode 100644
index 0000000..1c3759b
--- /dev/null
+++ b/src/components/chain/contract/GameItemMall.js
@@ -0,0 +1,50 @@
+import { apiPreRecharge } from '@/utils/marketplace'
+
+export class GameItemMall {
+  constructor(_chainInstance) {
+    this.bc = _chainInstance
+  }
+  
+  async sendTransaction(provider, {from, to, data}) {
+    const txHash = await provider.provider.request({
+      method: 'eth_sendTransaction',
+      params: [{
+        from,
+        to,
+        data
+      }]
+    })
+    console.log(txHash)
+    const res = await provider.waitForTransaction(txHash)
+    if (res.status == 0) {
+      throw new Error('transaction failed')
+    }
+    return txHash
+  }
+
+  async execBuyItem(itemId) {
+    await this.bc.checkPassportLogin();
+    const chainId = parseInt(import.meta.env.VUE_APP_NET_ID);
+    const { provider, address } = await this.bc.selectAddress({targetChainId: chainId})
+    const preDatas = {
+      net_id: address,
+      goods_id: itemId,
+      account_address: address,
+    }
+    const { errocode, errmsg, calls } = await apiPreRecharge(preDatas)
+    if (errocode) {
+      throw new Error(errmsg)
+    }
+    if (!calls || calls.length == 0) {
+      throw new Error('no calls')
+    }
+    let resutls = []
+    for (let i = 0; i < calls.length; i++) {
+      const { to, data } = calls[i].trans_req
+      let hash = await this.sendTransaction(provider, {from: address, to, data})
+      resutls.push(hash)
+    }
+    return resutls
+  }
+
+}
diff --git a/src/utils/marketplace.js b/src/utils/marketplace.js
index 6b74694..ca486a7 100644
--- a/src/utils/marketplace.js
+++ b/src/utils/marketplace.js
@@ -177,3 +177,9 @@ export const apiRechargeHistory = async (account_address) => {
   const url = `${API_BASE}/api/recharge/history/${net_id}/${account_address}`
   return httpPost(url, {})
 }
+
+// 充值-购买
+export const apiPreRecharge = async (data) => {
+  const url = `${API_BASE}/api/recharge/buy`
+  return httpPost(url, data)
+}