A child’s daytime cough and nighttime cough may be related to environmental factors, respiratory infections, allergic cough and so on. 1. Environmental factors: such as poor air, smoking, etc. will cause irritation to the baby’s respiratory tract, causing daytime cough and nighttime cough symptoms. 2. Respiratory tract infections: bacterial or viral infections, mycoplasma infections and other causes of respiratory tract inflammation, resulting in daytime cough and nighttime cough symptoms. 3. Allergic cough: If the child’s body is sensitive, he or she may come into contact with allergic substances outdoors during the day, causing symptoms of daytime cough and nighttime cough. Children coughing during the day and not coughing at night, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.