New crown patients have lived in the house should be promptly eliminated, such as elimination of qualified 1~3 days to move in. New crown patients leave the house to do indoor disinfection work in a timely manner, disinfection needs to be done after the material standard test, this test is in the indoor selection of 10 parts of the patient’s easy access to the parts of the specimen to do the new crown nucleic acid test. If the result is positive, it means that the virus still exists in the room, and can not live for the time being; if it is negative, it means that there is no new coronavirus in the room can live. If the sample is taken in time, you can move in within 1~3 days. New crown virus is more contagious, will be transmitted through aerosols, respiratory tract. In order to prevent the transmission of this patient, it is important to pay attention to the safety of the environment, and to be actively vaccinated against New Crown. If you inadvertently stay in a house where a patient with neocoronavirus who has not been decontaminated has lived, you are at risk of contracting neocoronavirus pneumonia, and you should take isolation measures to avoid reinfecting others because of the infection you have contracted. Note: On December 26, 2022, the National Health Commission announced that the terms “new coronavirus pneumonia” and “new coronavirus pneumonia” were renamed to “new coronavirus infection” in this article.