Infections infected with the Omicron strain of the Neocoronavirus can generally be detected in 3~5 days, and some may take longer, usually no more than 14 days. The Omicron virus is a mutated type of the New Crown virus, which is more contagious and has a significantly shorter incubation period. According to the current clinical observation of Omicron-infected patients, the New Crown nucleic acid can be detected positively in 3 to 5 days in general. The specific detection time with the amount of infected virus, body resistance also has a relationship, some patients due to strong body resistance, Omicron virus detection time will be extended accordingly, some even up to 14 days. In addition, some Omicron asymptomatic infected people, due to their own lack of clinical manifestations, did not consult a doctor in a timely manner, so the detection time may be longer. Tips] In this article, “new coronavirus pneumonia, new coronavirus pneumonia”, etc., has been December 26, 2022, the National Health Commission issued a notice to change the name to “new coronavirus infection”.