Beijing Municipal Bureau of Public Security  has the following main functions:

1. Implement public security guidelines and policies, submit local draft laws and regulations, and organize and undertake public security operations in Beijing.

2. Have full knowledge of the elements affecting policy stability, harming domestic security and disrupting public order, and formulate and implement counter-measures.

3. Prevent, stop and investigate into illegal and criminal activities, handle social disorders and riots, manage assemblies, parades and demonstrations, and administer special professions and hazardous articles in accordance with law.

4. Maintain traffic safety and order and handle traffic accidents in Beijing.

5. Manage fire-fighting work and supervise fire control efforts.

6. Provide security service to state leaders of China and important foreign guests.

7. Manage household registration, nationality and entry and exit affairs for Beijing residents, and handle matters related to the residence and travel in Beijing by aliens.

8. Enforce punishment over criminals who are sentenced to surveillance, short term of forced labor under detention, or deprivation of political rights and those who are serving terms outside the prison; oversee criminals who are on probation or parole; and manage jails, detention houses, drug-relief reformatories and penitentiaries.

9. Supervise public information network security.

10. Instruct and supervise the security work of government agencies, social groups, institutions, enterprises, and key construction projects; and provide guidance to mass organizations in preventative security measures.

11. Manage correction through custody and reeducation through labor in accordance with law.

12. Develop public security technology, including information technology, criminal investigative techniques and operation techniques.

13. Supply the Bureau’s functionary departments with public security equipment，uniforms and funds, and supervise subordinate public security bureaus at the district and county levels on such logistic affairs.

14. Formulate and implement disciplinary regulations for Beijing police force; organize educational programs and trainings for police officers and raise public awareness of security; manage police officers and police ranks in accordance with its jurisdiction; supervise and investigate into police offences.

15. Manage and lead the police force and the fire brigade and lead and command the armed police in public security operations.

16. Undertake other duties assigned to it by the Beijing Municipal Government.