There are many causes of nocturnal cough in children, both infectious and non-infectious factors, so you need to find out the cause and prescribe the right medicine. 1. Infectious factors: (1) Respiratory tract infections: Bronchitis and pneumonia, for example, can easily trigger a nocturnal cough, especially if you are infected with mycoplasma, and this nocturnal cough will be a little more pronounced. (2) Pertussis: Pertussis can also trigger a nocturnal cough, which is more pronounced. Because bacteria can cause damage to epithelial cells, a strong nighttime cough may result in a red face, breath-holding, and possibly apnea. 2. Non-infectious factors: (1) Bronchial asthma: also coughing or wheezing is more pronounced at night as well as in the morning, and this condition requires further examination at the hospital for clarification. (2) Allergic cough: This cough is an irritating cough without phlegm. Do not have stuffed toys or blankets in the bed where you sleep and do not have flowering plants in the bedroom. If the baby has a past history of allergies, allergen testing is recommended. Avoid contact with allergens. (3) Too dry indoors: Cough that occurs when the baby’s throat is uncomfortable. A humidifier can be used at home. The treatment and prognosis of coughs caused by different causes are different. Parents are advised to treat their child’s condition and go to the hospital if necessary.