The symptoms of pneumonia infection are mainly cough, sputum, chest tightness, chest pain, etc. However, all other manifestations, such as nausea, vomiting, and other gastrointestinal reactions, cannot be excluded. Fever may also occur, and fever is divided into low and high fever, which can be differentiated according to the germ of the pneumonia infection and the severity of the infection. Pneumonia is divided into bacterial pneumonia and viral pneumonia. To clarify which pathogen is responsible for the infection, the results of the pathogen examination and drug sensitivity test need to be clarified, and sputum culture or blood culture needs to be completed to guide the next treatment choice. If the infection is bacterial, further antibiotics should be applied for treatment, and if the infection is viral, antiviral drugs should be used, and viral infections are divided into common viral infections and coronavirus infections.