New crowns generally refer to novel coronavirus pneumonia, and airborne transmission is mostly between 1 and 5 meters. New coronavirus pneumonia is mainly caused by infection with new coronavirus, which can be transmitted by respiratory droplets, close contact and aerosols, etc. Infection can be induced by contact with virus-contaminated items in some populations. Therefore, new coronavirus pneumonia is highly transmissible, and the distance of airborne transmission is generally between 1 and 5 meters, which should be taken seriously. If healthy people want to prevent novel coronavirus pneumonia, they should pay attention to opening windows and windows frequently, ensuring sufficient sleep time, appropriate physical exercise, and paying attention to a balanced diet. People should also actively receive the new coronavirus vaccine, minimize going out, avoid close contact with others, and keep a distance of more than 1 meter from others when necessary. If the body is suspected to have symptoms of new coronavirus pneumonia, such as dry cough, fever, body weakness, etc., it should be promptly reported to the community or consult a designated hospital for examination, so that the disease can be diagnosed and timely and effective treatment measures can be taken in accordance with medical advice. Tip: “New coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.