New Crown Pneumonia may cause symptoms of phlegm in the throat. According to the Guidelines for the Management of Crown Pneumonia (Ninth Edition), the main symptoms of the disease are a dry cough, weakness and fever. However, if the disease progresses further and leads to a more severe inflammatory reaction in the respiratory system, there is a high risk that the respiratory glands will become more irritated and secrete more fluid, resulting in more phlegm, which can lead to phlegm in the throat. Symptoms of Croup can be quite varied and in many cases are similar to those of other respiratory illnesses, which are not specific and can be easily confused. If you suspect that you are infected with C. neoformans, it is important that you undergo tests such as nucleic acid tests. Therefore, during the epidemic, individuals should pay more attention to their personal health, be alert when there are abnormal respiratory symptoms, consult a physician in a timely manner, and follow the doctor’s instructions to conduct the appropriate tests to determine the cause of the disease and actively treat it.