A prison in a broad sense refers to a place where all prisoners are held, including prisons, detention centers and detention centers. In a narrow sense, a prison refers to a criminal who is sentenced to death with a two-year suspension of execution, life imprisonment or fixed-term imprisonment in accordance with the provisions of the Criminal Law and the Criminal Procedure Law. The principle of combining punishment with reform and combining education with labor is applied to criminals, and criminals are transformed into law-abiding citizens. The competent department of a prison is the Prison Administration, and the highest administrative department is the Ministry of Justice.