Immigration records are documents used to prove an individual's entry and exit records and history. The purposes of immigration records include the following: 1. Proof of an individual's entry and exit history: Entry and exit records can prove an individual's entry and exit history, including the time, place and destination of entry and exit. This is necessary for processing visas, applying for residency, or checking border controls. 2. Proof of legal entry and exit actions: Entry and exit records can prove that an individual's entry and exit actions are legal and do not violate national laws and regulations. This is very important to be able to prove your legal identity and conduct when applying for a visa or residency. It should be noted that entry and exit records are recorded and managed by state organs or border departments, so individuals cannot obtain these records on their own and need to apply and inquire from relevant agencies or departments.