Public security bureau auxiliary police handle passports and visas?

2. "Visa" means visa, which is the approval document for a country to allow foreigners to enter the country. Generally speaking, a "visa" is issued by a special agency of a country's embassy or consulate abroad and by a special person (visa officer);

The "visa" is usually attached to the passport, so you must have a passport if you want to go abroad to apply for a visa. However, having a passport does not necessarily mean getting a visa;

There are many kinds of visas. Broadly speaking, there are "immigrant visas" and "non-immigrant visas". If subdivided, non-immigrant visas can be divided into: business visas, tourist visas, work visas, student visas, visiting scholar visas, transit visas, religious visas, crew visas, and so on;

Visa officers will have different requirements and standards for applying for different visas. Therefore, for example, applicants who can get a tourist visa may not get a student visa.