When there is headache, cough and weakness, fever is considered to be present, and the temperature test can be perfected. If the body temperature exceeds 37.3℃, it is clinically recognized as fever. When the body temperature is lower than 38.5℃, physical cooling methods can be adopted, such as warm water baths, ice packs to lower the temperature. If the body temperature is higher than 38.5 ℃, you need to use antipyretic drugs, such as paracetamol, Merrill Lynch, lexapro and so on, it is recommended to take after meals, after taking antipyretic drugs to drink a lot of water, to avoid the emergence of defecation. When the above clinical manifestations occur, it is usually a viral infection, and symptomatic treatment can be taken, for example, when the cough is heavy and affects the rest and sleep, oral cough medication can be taken, and commonly used medications include licorice tablets, Lung Lik Cough Compound, and Strong Loquat Lozenges.