The transmission of pneumonia from novel coronavirus infection is mainly by droplet transmission. In terms of choosing masks, ordinary disposable masks can be prevented and special masks are not necessary. Therefore, it is recommended that masks be worn promptly when going out to public places, seeking medical treatment, and taking public transportation. In addition, when going out to reduce contact with public objects and parts of public places, return from public places, after coughing hand cover, before and after meals, you need to wash your hands with hand sanitizer or soap running water, or use alcohol-containing no-rinse hand sanitizer to disinfect.