A child’s cough and fever is a relatively common symptom in children, usually caused by a respiratory infection, and should be examined in a timely manner to prevent the progression of the condition from deteriorating. 1, the child has a cough and fever need to clarify whether it is an upper respiratory tract infection or lower respiratory tract infection, generally through lung auscultation, if necessary, through chest X-ray examination to help diagnose. Pneumonia is generally considered if there is a fixed wet rhotic sound in the lungs and a lung exudate on chest radiograph. 2, children with cough and fever also need to clarify the etiology, bacteria, viruses, mycoplasma and other infections may show cough and fever, but the treatment is different, generally through routine blood tests, virus antibody tests, mycoplasma antibodies, sputum culture and other clear etiology, consider bacterial infections need to give antibiotic treatment, influenza virus infection can choose oseltamivir treatment, mycoplasma infection can consider macrolide The treatment of mycoplasma can be considered as macrolide antibiotics. 3, children with cough and fever should also pay attention to whether other causes, such as bronchial foreign body co-infection, asthma co-infection and other conditions will also show cough and fever, need to be analyzed on a case-by-case basis. Parents should pay attention to their children’s cough and fever, especially if the symptoms do not improve progressively, and they need to go to the hospital in time.