Novel coronavirus transmission by aerosol is conditional, and as of today, there is no confirmation of aerosol transmission of novel coronavirus. Several versions of our novel coronavirus pneumonia treatment protocols state that transmission by respiratory droplets and close contact is the main route of transmission of novel coronavirus. The possibility of transaerosol transmission exists in a relatively closed environment with prolonged exposure to high aerosol concentrations. Aerosol transmission will be more widespread and the harm will be greater. Only by knowing the ways of disease transmission can we properly prevent and protect medical personnel and susceptible people. Therefore, we should respond to the government’s call to cultivate at home, wear masks outside, wash hands regularly, and keep an appropriate distance from others.