When buying a high-speed rail ticket, you can choose to buy one more station, which is for the convenience of passengers who need to get off on the way. However, whether you can get off at the previous station depends on the specific situation.
First of all, it should be noted that the high-speed rail ticket has a seat number. If you get off at the previous station, the passengers behind will not be able to use this seat, which may lead to a waste of empty seats.
Secondly, if you need to get off at the previous station, you need to apply to the conductor or station staff in advance and get approval. In general, only in emergencies, such as sudden illness, family emergencies, etc., can approval be obtained.
Finally, if you get off at the previous station without approval, you will be regarded as ticket evasion and may be fined.
To sum up, if you need to get off at the previous station, you need to apply to the conductor or station staff in advance and get approval. It is not recommended to get off at the previous station without approval.