Dry cough and runny nose are indeed one of the clinical manifestations of novel coronavirus pneumonia, but it does not necessarily mean that the presence of dry cough and runny nose is a sign of novel coronavirus pneumonia. However, it does not necessarily mean that the presence of a runny nose and dry cough is a sign of NCPV pneumonia, because there are other causes of a runny nose and dry cough, such as upper respiratory tract infections, bronchitis, and so on. A positive nucleic acid test is the gold standard for the diagnosis of novel coronavirus pneumonia. However, even if the diagnosis of novel coronavirus pneumonia is confirmed, a single nucleic acid test is not guaranteed to be positive because the nucleic acid test is also affected by specimen collection and testing reagents, which may result in false negatives. In order to increase the positive rate, specimen collection should be standardized, and lower respiratory tract secretions can also be collected.