New Crown is usually new coronavirus pneumonia, snot dripping down like water is not necessarily new coronavirus pneumonia, but may also be caused by influenza, allergic rhinitis, cerebrospinal fluid nasal leakage. Patients with novel coronavirus pneumonia will have a runny nose with snot dripping down like water, as well as decreased sense of smell, decreased sense of taste, sore throat, nasal congestion, fever, diarrhea, muscle pain and other manifestations. But in addition to the new coronavirus pneumonia will cause the patient to appear like water dripping down the nose, the patient appears to have influenza will also have a running nose, sore throat, high fever and other manifestations. In addition, patients with allergic rhinitis will also show clear watery nasal discharge, paroxysmal sneezing, nasal congestion, itchy nose and so on. In cerebrospinal fluid nasal leakage, cerebrospinal fluid flowing into the nasal cavity due to various reasons will also appear as dripping nasal mucus. Therefore, patients who have nasal drip like running water may be caused by the new coronavirus pneumonia, but also may be caused by other diseases, if the treatment according to the cold did not get better need to be further examined. Tip: The terms “new coronary pneumonia and new coronary virus pneumonia” mentioned in this article were renamed to “new coronary virus infection” on December 26, 2022, as announced by the National Health Commission.