Patients with early stage of atypical pneumonia will show the following symptoms: 1. fever, usually low to moderate fever, body temperature around 37-38.5℃, some patients will be in high fever, reaching 39℃ or more, flaccid fever will appear, the general course of the disease is 1-2 weeks. 2. accompanied by headache, body muscle pain, and even weakness, diarrhea, vomiting symptoms. 3. general patients in the beginning of the disease 3-7 days The patient usually has a dry cough without sputum, or a small amount of sticky sputum is coughed out, and the lung signs are not obvious, and some patients do not even have any symptoms of pneumonia.