Cough is a common disease in children. The treatment of cough is a slow process. If a cough is always bad, the first thing to do is to clarify the cause of the cough. Common causes of cough include respiratory tract infections such as upper respiratory tract infections, bronchitis and pneumonia, which can cause coughing in children. There are also non-infectious causes such as allergic cough, cough variant asthma, upper airway syndrome, etc., which can also cause recurrent coughing in children that does not get better easily. Only when the cause is clear and the treatment is based on the cause can we achieve better results. These three micronutrients are very good for recurrent coughs caused by respiratory infections and can also strengthen the child’s immunity, with vitamin A having a repairing effect on the respiratory mucosa. Therefore, timely supplementation of vitamin A, zinc or iron can assist in the treatment of recurrent cough and speed up the healing process. Pay attention to keeping warm. The stimulation of cold air outside can aggravate the cough. Therefore, children should pay attention to their surroundings not to be too cold during coughing, remember to wear a mask when going out, and do not inhale cold air directly to prevent the stimulation of the respiratory mucosa by cold. In addition, it is important to pay attention to the ventilation of the surroundings and not to let your child stay in a closed environment for a long time. Drink more hot water. It helps to dilute the phlegm and promote recovery, and can help to relieve cough symptoms. Finally, children’s cough is always bad is a chronic disease, parents should be patient in the process of treatment and start improving it from daily life, do not over medicate, too much medication can easily lead to sequelae.