The Public Security Bureau guides and supervises the public security work of state organs, social organizations, enterprises and institutions and key construction projects, and guides the public security work of mass public security organizations such as public security committees.
The business of the Public Security Bureau can be simply divided into: criminal, public security, traffic control, fire control, entry and exit, population management, domestic public security and so on. Public security bureau is usually divided into several business departments (such as political department, legal department, equipment finance department, information and communication department, etc.). ), police station (according to the function can be divided into criminal investigation, public security, household administration, secret service), a number of teams (such as criminal police team, patrol team, public security team, traffic police team). Public security bureaus have different levels and specific names, such as XX Corps, XX Detachment and XX Brigade. ), as well as institutions in active service (specifically, border defense, fire protection and security bureaus).