Positive means positive for Novel Coronavirus Pneumonia, and positive patients may infect people even if they are wearing a mask. Novel coronaviruses can be transmitted through a variety of ways, including respiratory droplets, contact transmission, feces and urine. If wearing a mask alone is not enough, when other people touch contaminated items or aerosols in the air, although wearing a mask can block part of it, but there is no way to block the virus that exists on the surface of the item for a short period of time, so a positive patient wearing a mask is also contagious. In normal life, pay attention to personal hygiene, develop the habit of washing hands frequently. Wear a good mask when you go out, try to avoid going to crowded occasions, avoid close contact with people, keep a certain distance to prevent being infected by the new coronavirus. New coronavirus positive patients wearing masks, there is still a chance of infection, if diagnosed as positive, should be promptly isolated, treatment. Tip: In this article, “new coronavirus pneumonia” and “new coronavirus pneumonia” were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.