Which department is in charge of immigration?

Legal analysis: The National Immigration Bureau is under the brand of People's Republic of China (PRC) Exit-Entry Administration and is managed by the Ministry of Public Security. The main duties of the National Immigration Bureau are: to coordinate the formulation and implementation of immigration policies, to be responsible for entry and exit management, port certificate inspection and border people's exchanges management, to be responsible for foreigners' stay and permanent residence management, refugee management and nationality management, to take the lead in coordinating illegal entry, illegal residence, illegal employment of foreigners and repatriation of illegal immigrants, to be responsible for the management of China citizens' services for going abroad for personal reasons, and to undertake international cooperation in the field of immigration.

Legal basis: Nationality Law of the People's Republic of China

Article 15 The organs accepting nationality applications are local municipal and county public security bureaus at home, and China's diplomatic representative offices and consular offices abroad.

Article 16 Applications for joining, quitting and restoring China nationality shall be examined and approved by People's Republic of China (PRC) and the Ministry of Public Security. If approved, the Ministry of Public Security will issue a certificate.