Beijing AnKang Hospital is a psychiatric hospital administrated by the Beijing Public Security Bureau. It emphasizes on treatments and rehabilitation on mental diseases, drug detoxification, forensic psychiatric expertise, etc. The hospital occupies an area of 121,700 square meters, among which building area is 47,070 square meters and greenbelt 42,600 square meters. It has 1,800 sickbeds, 800 of which for psychosis patients and the other 1,000 for drug addicts. There are 510 employees, 372 of them are professionals.