New coronavirus infection detection methods are: 1, new coronavirus nucleic acid detection, through the nasopharyngeal swab to take nasopharyngeal secretions for nucleic acid detection, if positive, it suggests new coronavirus infection. If negative, the interval of more than 24 hours to sample again, two consecutive negative can be ruled out. 2, new coronavirus antibody test, antibodies are divided into IgM and IgG two, if IgM positive, it suggests that the present infection, infectious, need to be isolated. If IgG is positive, it indicates a previous infection, in recovery and not contagious.3. Pulmonary CT examination, pulmonary CT can be seen from the outer lung bands of both lungs with progressive aggravation.4. Routine blood tests, suggesting that the total number of white blood cells is not high or lower, accompanied by a lower lymphocyte ratio.