If a five-year-old child coughs and has phlegm, the specific treatment methods are as follows: First, during the period of coughing and phlegm, the diet must be light and easy to digest. Avoid oral intake of fish, shrimp and mutton, which can easily aggravate the child’s coughing symptoms, drink more water and pay attention to rest at the same time to facilitate the recovery of the disease. Second, take oral medications to reduce phlegm and cough for treatment, such as Aminobroxol oral solution, Aminobutrol oral solution or Lung Power Cough combination. Nebulized inhalation therapy is a particularly effective way to solve cough and phlegm, which can directly bring the drug to the airway and help to humidify the airway and facilitate the absorption of phlegm. 4. According to the cause of the child’s cough and sputum, the corresponding medication for the pathogenic bacteria should be selected, such as anti-viral medication for oral administration if it is caused by viral infection. If it is caused by bacterial infection, cephalosporin or penicillin antibiotics can be given for treatment. In case of mycoplasma infection, macrolide antibiotics should be given for treatment.