Beijing Beihai Hospital is located in the north of the Forbidden City in Xicheng District, Beijing, next to Beihai Park, which is a royal garden with a history of more than 1000 years. Beihai Hospital, a comprehensive key hospital, is a medical institution directly managed by Xicheng District Health Bureau in Beijing. The hospital has gynecology, breast, urology, family planning, physical examination center, Chinese medicine and other specialized departments, as well as pharmacy, radiology, biochemistry, ultrasound, clinical laboratory and other medical departments. The hospital actively introduces high technology and constantly improves the level of medical research. Now we have a team of doctors who combine Chinese and western medicine and have excellent medical skills, bringing together well-known experts and scholars in the domestic medical field. According to the quality control of Beijing Municipal Health Bureau 5 1 Medical Institution Laboratory (Clinical Laboratory) and 174 Medical Institution Clinical Blood Laboratory (Blood Bank), the hospital is qualified.