var params = [];
var info= {
        "张三" : "21",
        "李四" : "32",
        "王五" : "14",
        "小红" : "31",
        "小兰" : "24",
        "王明" : "22",
    };
for ( var key in info) {
    var param = {};
    param.name= key;
    param.age= info[key];
    params.push(param);
}

console.log(params)；
//结果[{name:'张三',age:'21'},{name:'李四',age:'32'},{name:'王五',age:'14'},
//      {name:'小红',age:'31'},{name:'小兰',age:'24'},{name:'王明',age:'22'}]