diff --git a/vm/duktape/example/usermng.abi b/vm/duktape/example/usermng.abi
new file mode 100755
index 00000000..cbd1c778
--- /dev/null
+++ b/vm/duktape/example/usermng.abi
@@ -0,0 +1,6 @@
+{
+    "account":{"type":"string"},
+    "age":{"type":"uint32"},
+    "account2":{"type":"string"},
+    "age2":{"type":"uint32"}
+}
\ No newline at end of file
diff --git a/vm/duktape/example/usermng.js b/vm/duktape/example/usermng.js
new file mode 100755
index 00000000..3f9b20a0
--- /dev/null
+++ b/vm/duktape/example/usermng.js
@@ -0,0 +1,108 @@
+Array.prototype.toUint8Array = function(){
+    return new Uint8Array(this)
+}
+Array.prototype.from = function(arrayBuffer){
+    return arrayBuffer.toArray()
+}
+
+Array.prototype.fillZero = function(n){
+    var arr = []
+    for(i=0;i<n;i++){
+        arr[i] = 0
+    }
+    return arr;
+}
+
+Uint8Array.prototype.toArray = function(){
+    var arr = []
+    var obj = this
+    Object.keys(obj).forEach(function(key){
+        var value = obj[key]
+        arr.push(value)
+    })
+    return arr
+}
+
+Uint8Array.prototype.slice = function(i,j){
+    var arr = this.toArray()
+    var arrTemp = arr.slice(i,j)
+    return new Uint8Array(arrTemp)
+}
+
+
+Duktape.modSearch = function (id) {
+    var name;
+    var src;
+    var found = false;
+
+    /* ECMAScript check. */
+    name = './vm/duktape/js_lib/' + id + '.js';
+    /* name = id + '.js'; */
+    src = load_js(name);
+    if (typeof src === 'string') {
+        print('loaded ECMAScript:', name);
+        found = true;
+    }
+
+    /* Must find either a DLL or an ECMAScript file (or both) */
+    if (!found) {
+        throw new Error('module not found: ' + id);
+    }
+
+    /* For pure C modules, 'src' may be undefined which is OK. */
+    return src;
+}
+
+var BTPack = require('BTPack')
+var BTUnpack = require('BTUnpack')
+var console = require('console')
+
+var previousabi= {
+    account:{type:'string'},
+    age:{type:'uint32'}
+}
+
+/* 
+V1: "12345",
+V2: 888,
+V3: "6789",
+V4: 999,
+:
+dc0004da00053132333435ce00000378da000436373839ce000003e7 */
+function reguser(){
+
+    var accountBuf = getParam()
+    var abiget = getAbi()
+
+    console.log(accountBuf)
+    console.log(JSON.stringify(abiget))
+
+    var accountInfo = BTUnpack(accountBuf,JSON.parse(abiget))
+
+    console.log(JSON.stringify(accountInfo))
+
+    var table = 'usermng'
+    var key = 'userreginfo'
+
+    var accountStr = accountBuf.toString();
+
+    setBinValue(table,table.length,key,key.length,accountStr,accountStr.length)
+
+    console.log('regist user complate\n');
+
+
+    return 0
+}
+
+
+function login(accountBuf){
+    var contract = "usermng"
+    var key = "keytest"
+    var obj = "userreginfo"
+    var result = getBinValue(contract,contract.length,key,key.length,obj,obj.length)
+    var arrayBuf = result.split(",")
+    var unpackObj = BTUnpack(arrayBuf,abi)
+    console.log(JSON.stringify(unpackObj))
+    console.log('login complate\n');
+    return 0
+}