If your baby has a recurrent cough that persists, it is important to carefully investigate the cause of the problem and actively control the inflammation and remove the phlegm on the other hand. Generally speaking, coughing is a protective reflex of the body, and moderate coughing helps the body to expel phlegm, which naturally relieves the cough and makes the use of cough medicines unnecessary. If your baby has a violent dry cough, you should use cough suppressants in time to reduce the harmful stimulus of coughing. If the cough is thick and sputum is secreted, you should emphasize the use of expectorant cough medicines and give your child more water to thin out the sputum, which will help the child excrete phlegm. For long-term cough, in addition to general inflammation, mycoplasma infection and allergic cough, tuberculosis infection, etc. should be ruled out, which requires relevant laboratory and auxiliary examinations, such as routine blood tests, blood sedimentation, mycoplasma antibodies, immune function, IgE, allergen check, sputum culture, chest X-ray and chest CT, bronchoscopy, etc., and medication should be administered under the guidance of the doctor. If the baby’s cough is accompanied by clinical manifestations such as fever, pus sputum and leukocytosis, active anti-infection should be given to eliminate inflammation. In the case of cough variant asthma, the baby should be treated according to the standard asthma treatment under the guidance of a doctor. Parents should not give their babies cough medicines without permission. Blindly using a variety of cough suppressants can temporarily stop the cough, but they cannot expel the phlegm, which on the one hand hinders ventilation and makes the baby feel difficult to breathe; on the other hand, the phlegm in the trachea becomes a good culture medium for pathogenic bacteria, leading to their proliferation, which often results in the opposite, as the inflammation cannot be eliminated and the cough cannot be controlled. If your child’s cough is so severe that it interferes with sleep and rest, only then can you take oral cough suppressants as appropriate. However, it is important not to take cough medicine as soon as the child coughs, but to use more phlegm-expectorant medicines. In addition, pay more attention to care and scientific diet, which will have a better effect. During the coughing period, you should also pay attention to keeping the room air at the right temperature and humidity to avoid excessive dryness, which may aggravate the cough. In terms of food therapy, you can give your child ice sugar and snow pear water and Sichuan scallop and honey water to regulate the cough. Don’t give your child cold, greasy and other stimulating foods, and don’t eat too salty nutty foods. If the baby is breastfeeding, you also need to pay attention to a light diet, and the breastfeeding mother’s diet should also be controlled to avoid oily, spicy, fish and shrimp and other stimulating foods to avoid adverse effects on the child.