你不觉得你的需求有矛盾吗，给ng-model赋值id值，又期望ng-model的值是对象？

如果想要最终ng-model是一列，但是你只能给出选中某项的id值（应该是你在页面编辑中遇到的），可以通过给定id先过滤出对应项，并赋值给selected。且ng-options表达式需要改成 item as item.name for item in selectData track by item.id

$scope.selectData = [
  {id:1001,name:"零零一"},
  {id:1002,name:"零零二"},
  {id:1003,name:"零零三"},
  {id:1004,name:"零零四"}
];
$scope.selected = $scope.selectData.filter(item => item.id === 1004)[0];

<select ng-model="selected" ng-options="item as item.name for item in selectData track by item.id">
    <option value="">-- 请选择 --</option>
</select>

<p>选项，{{selected}}</p>
<select ng-model="selected" ng-options="item.name for item in selectData">
        <option value="">-- 请选择 --</option>
</select>
$scope.selected = $scope.selectData[3];
$scope.selectData = [
    {id:1001,name:"零零一"},
    {id:1002,name:"零零二"},
    {id:1003,name:"零零三"},
    {id:1004,name:"零零四"}
];