A cough does not indicate a new coronavirus infection because it can be caused by a variety of reasons, the most common being acute upper respiratory tract infections, i.e. common colds, often caused by rhinoviruses, adenoviruses, etc. Influenza viral infections can also present with a simple cough. Influenza virus infections can also present with a simple cough, and it is necessary to observe whether there are any other symptoms in addition to the cough, such as low-grade fever, fatigue, and panic, chest tightness, and so on. In addition, it is also necessary to improve the chest CT examination for common clarification, if the CT results suggest that there are bilateral lungs hairy glass-like changes, combined with the blood routine and nucleic acid test results, it can be clearly diagnosed as new coronavirus infection pneumonia.