[Explain the etiology] Acute upper respiratory tract infection is referred to as “upper sensation”, which refers to inflammation of the nose, nasopharynx and pharynx, 90% of which is caused by viruses. Explanation of manifestations】 Mildly ill children show runny nose, nasal congestion, sneezing, pharyngeal discomfort, light cough, fever of different degrees. In severe cases, chills, high fever, headache, weakness, and even high fever convulsions. Introduction of treatment】 1, general treatment: rest, drink more water. 2, antibiotics: antibiotics are used for bacterial infections, but not for viral infections. 3, symptomatic treatment: physical cooling for high fever, coughing cough expectorants. 1. Diet: Give a light, nutritious liquid or semi-liquid diet, small and frequent meals, and drink more water. 2. Activity: Children with fever should rest in bed. 3. Review time and indications: Generally, no review is needed. Consult the doctor at any time when symptoms such as headache and fever, mental discomfort appear. Special instructions】 1. Closely observe the body temperature, mental and facial changes. 2.Strengthen the prevention and treatment of this disease, strengthen physical exercise, and enhance the body’s ability to adapt to temperature changes. 3.Avoid going to crowded public places during the peak of respiratory infection. 4.Strengthen oral care, older children can use warm salt water to rinse the mouth.