After the completion of the severe acute respiratory syndrome coronavirus-2 （SARS-CoV-2） isolation，culture and genome sequencing，the diagnosis of new coronavirus pneumonia mainly depends on the detection of the SARS-CoV-2 nucleic acid by RT-PCR. In addition，the new room temperature nucleic acid amplification technologies such as recombinase aided amplification（RAA）have been further applied in lab detection. Immunological diagnosis includes colloidal gold and IgM/IgG antibody detection by ELISA technology，which is used for screening and auxiliary diagnosis of the population. New diagnostic technologies based on CRISPR are also in the process of further improvement.