The West China Hospital Emergency Department (WCHED) enjoys a reputation nationally and internationally as one of the premier academic Emergency Medicine facility. The mission of WCHED is to achieve true excellence as one of great centers in research teaching and patient care for the field of Emergency Medicine. WCHED provide emergency services 24 hours a day, 7 days a week for almost all the emergency patients, except the stomatological, obstetric and gynecologic patients, and the pediatric patients. Due to a focus on excellence in patient care, comfort, satisfaction, and efficiency, the volume is currently over 150, 000 patients visits per year, with over 40,000 severe patients requiring invasive medical management. In addition to focusing on extraordinary promptness in clinical care, WCHED also provides superior education and training for emergency medicine residents and medical students.