The internal security brigade of the Public Security Bureau is mainly responsible for the security of the party and government organs and the security of the main leaders. The Municipal Internal Security Bureau is responsible for the internal security of the city's organs, organizations, enterprises and institutions. Each county bureau has an internal security office, which is specifically responsible for the supervision, management, inspection and guidance of the internal security work of organs, organizations, enterprises and institutions within its jurisdiction.

1. What departments are there in the Public Security Bureau?

1, criminal department;

2. Public security department;

3. Traffic management department;

4. Fire department;

5. Entry and exit departments;

6. Population management department;

7. Internal security department, etc.

Two, the public security bureau to undertake the duties of public security organs:

1, prevent, stop and investigate illegal and criminal activities;

2. Preventing and combating terrorist activities;

3. Maintain social security order and stop acts that endanger social security order;

4. Manage traffic, fire fighting and dangerous goods;

5. Manage household registration, resident identity card, nationality, entry and exit affairs and matters related to foreigners' residence and travel in China;

6. Maintaining public order in border areas;

7, guard the specific personnel stipulated by the state, guard important places and facilities;

8. Manage assemblies, processions and demonstrations;

9, supervision and management of public information network security supervision;

10, to guide and supervise the public security work of state organs, social organizations, enterprises and institutions and key construction projects, and to guide the public security work of mass public security organizations such as public security committees.

To sum up, the internal security brigade of the Public Security Bureau is mainly responsible for the security of the party and government organs and the security of the main leaders. The internal security unit is the internal security department, including many security cadres and employees of state-owned enterprises.

Legal basis:

Article 20 of the People's Police Law of the People's Republic of China

The people's police must enforce the law impartially and act impartially.

Article 46

Citizens or organizations have the right to report and accuse the people's police in violation of law and discipline in the people's police organs, people's procuratorates and administrative supervision organs. The organ that accepts the report and complaint shall promptly investigate and deal with it, and inform the prosecutor and complainant of the investigation results.