The common cause of influenza in children is influenza virus infection. Clinical symptoms of influenza such as high fever, fatigue, cough, muscle aches and pains, etc. Treatment mainly includes anti-infective treatment and symptomatic supportive therapy. 1. Clinical symptoms: Influenza in children often manifests itself as recurrent high fever, accompanied by fatigue, headache, generalized muscle aches and pains, etc. Nasal congestion, sneezing, coughing, muscle aches and pains. The upper respiratory tract symptoms such as nasal congestion, sneezing and runny nose are mild. 2. Treatment: If children are in the course of fever, they can be treated with antiviral therapy, such as oseltamivir, under the supervision of a doctor. Symptomatic treatment includes the use of antipyretics such as ibuprofen for high fever and saline nasal irrigation for runny nose. Symptomatic supportive therapy such as nebulization of ambroxol to relieve cough and phlegm and rehydration of fluids may also be prescribed. Children who have fever, cough, fatigue and other symptoms need to go to the hospital for treatment, complete the sputum influenza virus nucleic acid PCR and other tests, after a clear diagnosis, the use of the above medicines as prescribed by the doctor, and avoid contact with other children during the fever and up to 48 hours after the fever, resulting in contagion. And children need to rest in a ventilated environment, appropriate water, balanced diet.