The routine diagnosis and treatment of the emergency department of Peking Union Medical College Hospital includes cardiology, hematology, respiratory medicine, endocrinology, immunology, allergy, gastroenterology, neurology, basic surgery, orthopedics, thoracic surgery, cardiac surgery, urology, neurosurgery, plastic surgery, vascular surgery, anesthesiology, obstetrics and gynecology, pediatrics, dermatology, laser therapy, radiology, ultrasound and so on. The publication of this set of books is the need of clinical medical work and modern hospital management. It is not only used to systematically guide the clinical work of Peking Union Medical College Hospital, but also can be used for reference by medical colleagues all over the country.