The common causes of coughing in children include: whooping cough, reflux esophagitis and cough variant asthma. 1. Pertussis: If the child is not vaccinated against pertussis in time, when inhaling air contaminated by pertussis bacilli, he or she will be easily infected, and then cough repeatedly, and the cough will be more obvious at night. Some of the patients may also make a rooster-like sound when inhaling. 2. Reflux esophagitis: As the pressure in the patient’s stomach is not very balanced, when the symptoms are more serious, stomach acid and other gastric contents reflux into the esophagus at the same time will also burn the throat, which will cause irritating foreign body sensation in the throat, resulting in a repetitive cough. 3. Cough variant asthma: This is a special type of asthma that often has coughing as the only symptom. When this disease attacks, the patient will have a violent dry cough, especially after smelling a strange odor or contact with allergens cough symptoms will be further aggravated. This is why it can also lead to a recurring cough. There may be other reasons for a child’s cough to be recurrent, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.