If you use the wrong ID when buying a train ticket, you can follow the steps below:

  1. Contact the train station ticket window or customer service immediately and explain the situation.
  2. If you purchase tickets online, you can consult through the customer service function of the 12306 website or mobile APP.
  3. Provide correct certificate information, and the staff will help you verify and process it.
  4. If you purchase tickets at the ticket window, the staff will guide you on how to correct the information.
  5. If the ticket cannot be collected normally due to incorrect ID information, you may need to purchase a new ticket and pay the corresponding handling fee.

The specific situation may vary depending on the regulations of the railway station. It is recommended to communicate with the relevant departments in time and follow their guidance.