If your child has a recurrent cough, consider bronchial infection or pneumonia. It is recommended to see a doctor to confirm the diagnosis by auscultation or fluoroscopy and, if necessary, by radiography. For mild infections, anti-inflammatory drugs can be taken, and cough or phlegm should be treated with oral liquid or paediatric pellets, while in severe cases, infusion is recommended. It is also necessary to be alert to mycoplasma infection. If it is caused by mycoplasma infection, it is recommended to use intravenous erythromycin injection or oral azithromycin dry suspension. In addition, in recurrent coughs, it is important to eat a light, nutritious and easily digestible diet and not to eat fried foods, as they can add to the gastrointestinal burden and breed phlegm, making it difficult to heal the cough. Coughs can worsen after eating gill-like foods, which is related to fishy stimulation, so fish and shrimp foods and foods related to protein allergies should also be eaten sparingly.