the hospital build closed management, reasonable layout of the entrance and exit of the outpatient hall, two points at the front and back doors, and set up the entrance and exit guard by special personnel. People entering the front door must carry out pre examination. Fever patients and patients without mouth mask are not allowed to enter. Patients with fever are triaged to fever clinic for treatment,To reduce the risk of cross infection, the workers without masks should be educated and instructed to disinfect their hands and masks