In the past 10 days or so, there have been many children with high fever and frequent coughs. The following three main causes of the disease are summarized: 1. Influenza: Most of the illnesses are aggregated and manifest as high fever that does not subside, with a body temperature of 39°C or higher, or even up to 41°C. Most of the children are accompanied by chills, headache, sore throat and cough. Some children may have lung infection and other complications. Blood count: white blood cells are normal or neutropenia, C-reactive protein is normal or slightly high, pathogenic tests can confirm the diagnosis. Treatment principles: pay attention to drinking more water, light diet, dialectical use of Chinese medicine internal plus external treatment, high fever poisoning symptoms, can be treated by infusion. The fever duration of common epidemic virus infection is 3 to 5 days, while the fever duration of influenza is 5 to 7 days. 2, acute purulent tonsillitis: high fever, may be accompanied by chills, sore throat, dry cough, bad breath, late mostly yellow thick sputum, Western medicine treatment static antibiotics anti-infection, Chinese and Western medicine combined treatment can choose oral antibiotics, Chinese medicine internal plus Chinese medicine external treatment, Chinese and Western medicine combined treatment effect is better than the single antibiotics static, more in 36 to 48 hours to reduce fever, cough may be aggravated after the fever subsides. 3, Mycoplasma pneumoniae infection: manifestation of high fever, staccato cough, dry cough with little sputum, light day and heavy night, the initial lung auscultation is mostly abnormal, chest x-ray may have abnormal performance, optional erythromycin drip during the febrile period, the lung infection is mostly treated with azithromycin, plus taking Chinese medicine can significantly improve the cough symptoms and reduce the occurrence of pulmonary sequelae. It is worth noting that: Mycoplasma pneumoniae infection is contagious.