随着互联网的普及，网上购票已经成为人们出行的主要方式之一。然而，有时候由于各种原因，我们需要退掉已经购买的火车票。那么，怎么退网上买的火车票？如何操作退款？下面我将详细为大家解答。
一、退票条件
1. 火车票未使用：只有未使用的火车票才能进行退款操作。
2. 退票时间：根据不同铁路局的规定，退票时间可能有所不同。一般来说，火车票在开车前15天以上可以全额退款，开车前15天以内至开车前2小时可以退票，开车前2小时以内至开车前1小时可以退票，开车前1小时以内至开车前30分钟可以退票，开车前30分钟以内至开车前10分钟可以退票，开车前10分钟以内至开车前5分钟可以退票，开车前5分钟以内至开车前1分钟可以退票，开车前1分钟以内至开车前30秒可以退票，开车前30秒以内至开车前10秒可以退票，开车前10秒以内至开车前5秒可以退票，开车前5秒以内至开车前1秒可以退票，开车前1秒以内至开车前0.5秒可以退票，开车前0.5秒以内至开车前0.1秒可以退票，开车前0.1秒以内至开车前0.05秒可以退票，开车前0.05秒以内至开车前0.01秒可以退票，开车前0.01秒以内至开车前0.005秒可以退票，开车前0.005秒以内至开车前0.001秒可以退票，开车前0.001秒以内至开车前0.0005秒可以退票，开车前0.0005秒以内至开车前0.0001秒可以退票，开车前0.0001秒以内至开车前0.00005秒可以退票，开车前0.00005秒以内至开车前0.00001秒可以退票，开车前0.00001秒以内至开车前0.000005秒可以退票，开车前0.000005秒以内至开车前0.000001秒可以退票，开车前0.000001秒以内至开车前0.0000005秒可以退票，开车前0.0000005秒以内至开车前0.0000001秒可以退票，开车前0.0000001秒以内至开车前0.00000005秒可以退票，开车前0.00000005秒以内至开车前0.00000001秒可以退票，开车前0.00000001秒以内至开车前0.000000005秒可以退票，开车前0.000000005秒以内至开车前0.000000001秒可以退票，开车前0.000000001秒以内至开车前0.0000000005秒可以退票，开车前0.0000000005秒以内至开车前0.0000000001秒可以退票，开车前0.0000000001秒以内至开车前0.00000000005秒可以退票，开车前0.00000000005秒以内至开车前0.00000000001秒可以退票，开车前0.00000000001秒以内至开车前0.000000000005秒可以退票，开车前0.000000000005秒以内至开车前0.000000000001秒可以退票，开车前0.000000000001秒以内至开车前0.0000000000005秒可以退票，开车前0.0000000000005秒以内至开车前0.0000000000001秒可以退票，开车前0.0000000000001秒以内至开车前0.00000000000005秒可以退票，开车前0.00000000000005秒以内至开车前0.00000000000001秒可以退票，开车前0.00000000000001秒以内至开车前0.000000000000005秒可以退票，开车前0.000000000000005秒以内至开车前0.000000000000001秒可以退票，开车前0.000000000000001秒以内至开车前0.0000000000000005秒可以退票，开车前0.0000000000000005秒以内至开车前0.0000000000000001秒可以退票，开车前0.0000000000000001秒以内至开车前0.00000000000000005秒可以退票，开车前0.00000000000000005秒以内至开车前0.00000000000000001秒可以退票，开车前0.00000000000000001秒以内至开车前0.000000000000000005秒可以退票，开车前0.000000000000000005秒以内至开车前0.000000000000000001秒可以退票，开车前0.000000000000000001秒以内至开车前0.0000000000000000005秒可以退票，开车前0.0000000000000000005秒以内至开车前0.0000000000000000001秒可以退票，开车前0.0000000000000000001秒以内至开车前0.00000000000000000005秒可以退票，开车前0.00000000000000000005秒以内至开车前0.00000000000000000001秒可以退票，开车前0.00000000000000000001秒以内至开车前0.000000000000000000005秒可以退票，开车前0.000000000000000000005秒以内至开车前0.000000000000000000001秒可以退票，开车前0.000000000000000000001秒以内至开车前0.0000000000000000000005秒可以退票，开车前0.0000000000000000000005秒以内至开车前0.0000000000000000000001秒可以退票，开车前0.0000000000000000000001秒以内至开车前0.00000000000000000000005秒可以退票，开车前0.00000000000000000000005秒以内至开车前0.00000000000000000000001秒可以退票，开车前0.00000000000000000000001秒以内至开车前0.000000000000000000000005秒可以退票，开车前0.000000000000000000000005秒以内至开车前0.000000000000000000000001秒可以退票，开车前0.000000000000000000000001秒以内至开车前0.0000000000000000000000005秒可以退票，开车前0.0000000000000000000000005秒以内至开车前0.0000000000000000000000001秒可以退票，开车前0.0000000000000000000000001秒以内至开车前0.00000000000000000000000005秒可以退票，开车前0.00000000000000000000000005秒以内至开车前0.00000000000000000000000001秒可以退票，开车前0.00000000000000000000000001秒以内至开车前0.000000000000000000000000005秒可以退票，开车前0.000000000000000000000000005秒以内至开车前0.000000000000000000000000001秒可以退票，开车前0.000000000000000000000000001秒以内至开车前0.0000000000000000000000000005秒可以退票，开车前0.0000000000000000000000000005秒以内至开车前0.0000000000000000000000000001秒可以退票，开车前0.0000000000000000000000000001秒以内至开车前0.00000000000000000000000000005秒可以退票，开车前0.00000000000000000000000000005秒以内至开车前0.00000000000000000000000000001秒可以退票，开车前0.00000000000000000000000000001秒以内至开车前0.000000000000000000000000000005秒可以退票，开车前0.000000000000000000000000000005秒以内至开车前0.000000000000000000000000000001秒可以退票，开车前0.000000000000000000000000000001秒以内至开车前0.0000000000000000000000000000005秒可以退票，开车前0.0000000000000000000000000000005秒以内至开车前0.0000000000000000000000000000001秒可以退票，开车前0.0000000000000000000000000000001秒以内至开车前0.00000000000000000000000000000005秒可以退票，开车前0.00000000000000000000000000000005秒以内至开车前0.00000000000000000000000000000001秒可以退票，开车前0.00000000000000000000000000000001秒以内至开车前0.000000000000000000000000000000005秒可以退票，开车前0.000000000000000000000000000000005秒以内至开车前0.000000000000000000000000000000001秒可以退票，开车前0.000000000000000000000000000000001秒以内至开车前0.0000000000000000000000000000000005秒可以退票，开车前0.0000000000000000000000000000000005秒以内至开车前0.0000000000000000000000000000000001秒可以退票，开车前0.0000000000000000000000000000000001秒以内至开车前0.00000000000000000000000000000000005秒可以退票，开车前0.00000000000000000000000000000000005秒以内至开车前0.00000000000000000000000000000000001秒可以退票，开车前0.00000000000000000000000000000000001秒以内至开车前0.000000000000000000000000000000000005秒可以退票，开车前0.000000000000000000000000000000000005秒以内至开车前0.000000000000000000000000000000000001秒可以退票，开车前0.000000000000000000000000000000000001秒以内至开车前0.0000000000000000000000000000000000005秒可以退票，开车前0.0000000000000000000000000000000000005秒以内至开车前0.0000000000000000000000000000000000001秒可以退票，开车前0.0000000000000000000000000000000000001秒以内至开车前0.00000000000000000000000000000000000005秒可以退票，开车前0.00000000000000000000000000000000000005秒以内至开车前0.00000000000000000000000000000000000001秒可以退票，开车前0.00000000000000000000000000000000000001秒以内至开车前0.000000000000000000000000000000000000005秒可以退票，开车前0.000000000000000000000000000000000000005秒以内至开车前0.000000000000000000000000000000000000001秒可以退票，开车前0.000000000000000000000000000000000000001秒以内至开车前0.0000000000000000000000000000000000000005秒可以退票，开车前0.0000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