The 251st Hospital of the Chinese People's Liberation Army is located in Zhangjiakou, a mountain city outside the Great Wall. It is a military hospital with a glorious history and fine traditions. After more than sixty years of continuous development, it has now become a medical, teaching and military hospital. It is a tertiary grade A digital hospital integrating scientific research, preventive health care and rehabilitation. It has more than 1,800 beds, 53 professional disciplines, and 35 nursing wards. The annual outpatient volume is more than 530,000, the admission capacity is more than 40,000, and the number of surgeries is more than 11,000. It is a designated hospital for various types of medical insurance and new rural cooperative medical care. Medical and nursing services have passed ISO9001:2000 quality certification.