You can refund your ticket by following these steps:
Mobile APP Refund: Open the train ticket purchasing APP you used to purchase tickets, such as 12306, log in to your account, find “My Orders”, select the order you want to refund, and click “Refund” or “Refund” operation.
Official website refund: Log in to the 12306 official website, find “Order Query” on the “My 12306” page, select the order you want to refund, and follow the page prompts to refund.
Refund at the train station window: Bring your ID card and ticket, go to the train station ticket window, explain your refund needs to the staff, and the staff will handle the refund procedures for you.
Refund from automatic ticket vending machines: Some train stations are equipped with automatic ticket vending machines. You can also refund tickets on the automatic ticket vending machines by following the on-screen prompts.
Please note that there is usually a certain handling fee for refunds. The specific fees are subject to the official announcement of 12306. At the same time, the deadline for refunds is usually 30 minutes before driving, so please apply in advance.