diff --git a/src/index.ts b/src/index.ts
index 44bdeca..b7a8954 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -8,10 +8,10 @@ import { createWalletEvents, WALLET_ACCOUNT_CHANGE, WALLET_CHAIN_CHANGE, WALLET_
 import { ERC20Standard } from "./standards/ERC20Standard";
 import { ERC721Standard } from "./standards/ERC721Standard";
 import { IAccount, initAccount } from "./data/DataModel";
-import { DataManage } from "./manage/DataManage";
+import { loadData, saveData } from "./manage/DataManage";
 import { WALLET_STORAGE_KEY_NAME } from "./config/constants";
 import { DEFALUT_TOKENS } from "./config/chain_config";
-import { newMnemonic, restoreWalletByMnemonic } from "./manage/WalletManage";
+import { newAccount, newMnemonic, restoreWalletByMnemonic } from "./manage/WalletManage";
 
 
 var global =
@@ -53,7 +53,6 @@ export default class JCWallet {
   public erc20Standard: ERC20Standard
   public erc721Standard: ERC721Standard
   public mainHandlers = createWalletEvents()
-  private dataManage = new DataManage()
   public data: IAccount[] = []
   public iconType = 'jazz'
   private accountIndex = 0
@@ -64,7 +63,7 @@ export default class JCWallet {
     this.erc20Standard = new ERC20Standard(this.web3);
     this.erc721Standard = new ERC721Standard(this.web3);
     this.wallet = this.web3.eth.accounts.wallet.load(this.password, WALLET_STORAGE_KEY_NAME)
-    this.data = this.dataManage.loadData()
+    this.data = loadData()
     
     window.jc = { wallet: this };
     window.cc = window.cc || {};
@@ -165,7 +164,7 @@ export default class JCWallet {
       }
     }
 
-    this.dataManage.saveData(this.data)
+    saveData(this.data)
     return data
   }
 
@@ -176,7 +175,7 @@ export default class JCWallet {
   public createAccount() {
     // let account = this.web3.eth.accounts.create()
     const index = this.getMaxIdexOfType(0);
-    const accountNew = this.dataManage.newAccount(this.password, index)
+    const accountNew = newAccount(this.password, index)
     const account = this.wallet.add(accountNew)
     this.wallet.save(this.password, WALLET_STORAGE_KEY_NAME)
     const chain = this.currentChain.id
@@ -191,7 +190,7 @@ export default class JCWallet {
         index
       })
       this.data.push(data);
-      this.dataManage.saveData(this.data)
+      saveData(this.data)
     }
     
     this.accountIndex = this.wallet.length - 1
@@ -213,7 +212,7 @@ export default class JCWallet {
         index
       })
       this.data.push(data);
-      this.dataManage.saveData(this.data)
+      saveData(this.data)
     }
     this.web3.eth.accounts.wallet.save(this.password, WALLET_STORAGE_KEY_NAME);
     this.accountIndex = this.wallet.length - 1
diff --git a/src/manage/DataManage.ts b/src/manage/DataManage.ts
index c40dd22..a330dc7 100644
--- a/src/manage/DataManage.ts
+++ b/src/manage/DataManage.ts
@@ -1,43 +1,39 @@
 import { IAccount } from "../data/DataModel";
-import { singleton } from "../decorator/singleton.decorator";
 import { aesDecrypt, aesEncrypt } from "../util/crypto.util";
 
 const LOCAL_ACCOUNT_DATAS = 'local_account_datas'
 const LOCAL_WALLET_MNEMONIC = 'local_wallet_mnemonic'
-@singleton
-export class DataManage{
-  public loadData(){
-    const dataStr = localStorage.getItem(LOCAL_ACCOUNT_DATAS)
-    let result: IAccount[] = []
-    if (dataStr) {
-      try {
-        result = JSON.parse(dataStr)
-      } catch (err) {
-        console.log('load local data error')
-      }
+
+
+export function loadData(){
+  const dataStr = localStorage.getItem(LOCAL_ACCOUNT_DATAS)
+  let result: IAccount[] = []
+  if (dataStr) {
+    try {
+      result = JSON.parse(dataStr)
+    } catch (err) {
+      console.log('load local data error')
     }
-    return result
   }
+  return result
+}
 
-  public saveData(datas: IAccount[]) {
-    const dataStr = JSON.stringify(datas)
-    localStorage.setItem(LOCAL_ACCOUNT_DATAS, dataStr)
-  }
+export function saveData(datas: IAccount[]) {
+  const dataStr = JSON.stringify(datas)
+  localStorage.setItem(LOCAL_ACCOUNT_DATAS, dataStr)
+}
 
-  public loadMnemonic(password: string) {
-    let dataStr: string = localStorage.getItem(LOCAL_WALLET_MNEMONIC)
-    if (dataStr) {
-      dataStr = aesDecrypt(dataStr, password)
-    } 
-    return dataStr
-  }
+export function loadMnemonic(password: string) {
+  let dataStr: string = localStorage.getItem(LOCAL_WALLET_MNEMONIC)
+  if (dataStr) {
+    dataStr = aesDecrypt(dataStr, password)
+  } 
+  return dataStr
+}
 
-  
 
-  public saveMnemonic(mnemonic: string, password: string) {
-    const dataStr = aesEncrypt(mnemonic, password);
-    localStorage.setItem(LOCAL_WALLET_MNEMONIC, dataStr);
-  }
 
-  
+export function saveMnemonic(mnemonic: string, password: string) {
+  const dataStr = aesEncrypt(mnemonic, password);
+  localStorage.setItem(LOCAL_WALLET_MNEMONIC, dataStr);
 }
\ No newline at end of file
diff --git a/src/manage/WalletManage.ts b/src/manage/WalletManage.ts
index 9898915..fff6f3c 100644
--- a/src/manage/WalletManage.ts
+++ b/src/manage/WalletManage.ts
@@ -1,9 +1,10 @@
 import { hdkey } from 'ethereumjs-wallet'
 import { generateMnemonic, mnemonicToSeedSync } from "bip39";
+import { loadMnemonic, saveMnemonic } from './DataManage';
 
 
 export function newAccount(password: string, index: number) {
-  const mnemonic = this.loadMnemonic(password)
+  const mnemonic = loadMnemonic(password)
   const seed = mnemonicToSeedSync(mnemonic)
   const hdWallet = hdkey.fromMasterSeed(seed)
   const keyPair1 = hdWallet.derivePath(`m/44'/60'/0'/0/${index}`)
@@ -13,10 +14,10 @@ export function newAccount(password: string, index: number) {
 
 export function newMnemonic(password: string) {
   let mnemonic = generateMnemonic()
-  this.saveMnemonic(mnemonic, password)
+  saveMnemonic(mnemonic, password)
   return mnemonic
 }
 
 export function restoreWalletByMnemonic(mnemonic: string, password: string) {
-  this.saveMnemonic(mnemonic, password)
+  saveMnemonic(mnemonic, password)
 }
\ No newline at end of file
diff --git a/webpack.config.js b/webpack.config.js
index d3a67b2..650daa0 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -45,7 +45,7 @@ module.exports = {
     path: path.resolve(__dirname, "dist"),
     filename: "jcwallet.js",
     library: "jcwallet",
-    libraryTarget: "commonjs2",
-    // libraryTarget: "window",
+    // libraryTarget: "commonjs2",
+    libraryTarget: "window",
   },
 };