The flu, or acute upper respiratory tract infection, is a disease caused by a variety of viruses or bacteria, which occurs in children throughout the year and is one of the most common diseases in pediatricians’ clinics. Daily care Parents should be informed of the self-limiting nature of viral upper respiratory tract infections and the purpose of treatment to prevent cross-infection and complications. Pay attention to rest, maintain a good surrounding environment, drink plenty of water and supplement a lot of vitamin C, etc. 2, anti-infective treatment (1) antiviral drugs: most of the upper respiratory tract infections caused by viruses, self-limiting, the course of about a week, no obvious symptoms and complications can be used without drugs, or try ribavirin; if the influenza virus infection, oseltamivir phosphate can be used for oral administration. (2) antibiotics: bacterial upper respiratory tract infection or viral upper respiratory tract infection secondary to bacterial infection can be treated with antibiotics. 3, symptomatic treatment (1) high fever can be warm wet compress, provide good cooling conditions, oral acetaminophen or ibuprofen can be used to lower the temperature. (2) Reduce nasal congestion / nasal symptoms with nasal mucosal vasoconstrictors such as pseudoephedrine. (3) Antihistamine paracetamol reduces sneezing and nasal overflow and dries and thickens secretions from the lower respiratory tract. (4) Chinese medicine (divided into wind-cold, wind-heat, summer-heat type) also has a good effect. 4, prevention mainly rely on strengthening physical exercise to enhance resistance; avoid passive smoking; prevention and control of rickets and malnutrition; avoid going to crowded public places. If the disease is not cured for more than a week, go to the hospital in time.