Legal analysis: there is no need to charge a change fee for changing the train ticket. When the changed train fare is higher than the original fare, check the fare difference; When the changed train fare is lower than the original fare, the fare difference will be refunded.

Legal basis: Article 34 of the Regulations on Railway Passenger Transport stipulates that when a passenger can't take the train according to the date and train number specified on the ticket face, he should go through the visa formalities for taking the train in advance or later before the date and train number specified on the ticket face. In special circumstances, with the consent of the stationmaster, he can do it within 2 hours after driving. Passengers with EMU train tickets are not restricted to change to other EMU trains within 2 hours after driving. Group passengers shall not be later than 48 hours before driving. During the pre-sale period of ticket sales at the station, the station should deal with it, take back the original ticket and issue a new ticket, and mark the words "original change" on the ticket face of the new ticket (in special cases, mark the words "change after driving will not be refunded"); If there is checked baggage in the original ticket, the words "checked baggage in the original ticket" should be marked on the back of the new ticket, and the station name stamp should be affixed. When necessary, the railway transport enterprise may temporarily adjust the change method.