Before going to the public security organ, you need to bring your valid ID card, bail pending trial decision and other related materials, as well as a copy of the original judgment or ruling and other related legal documents. At the same time, you can go with your lawyer or relatives and friends.
After going to the public security organ, you can explain to the legal worker or the police on duty that you want to get a bail pending trial, and then go through the relevant formalities after submitting the above materials for confirmation. The specific procedures may be different in different regions and situations. It is suggested to contact or consult the local public security organ or lawyer before going to the public security organ in order to obtain more accurate and complete information.