Baby night cough daytime cough may be secretions can not be discharged in a timely manner and other physiological reasons, may also be allergies, pathogenic infections and other pathological reasons, need to be specifically analyzed. 1. Secretions can not be discharged in a timely manner: the baby sleeps at night most of the posture for lying down, respiratory secretions can not be discharged in a timely manner, will stimulate the throat to produce cough. At this time, parents need to adjust the sleeping position for the baby to reduce the secretion of the throat stimulation. 2. Allergy: If the baby is allergic to the surrounding environment, such as pollen, dust and so on. At night if there are such substances in the air, the respiratory tract caused by irritation, will also cough. 3. Pathogen infection: the baby bronchial mucosa against external viruses, bacteria and other pathogens of low capacity, so it is easy to respiratory infections caused by coughing, can be manifested as daytime not coughing, night aggravation. Parents need to give the child to wear a mask, less to go to places where people gather, open the window diligently. Baby cough at night and not cough during the day may also have other reasons, such as cough variant asthma, it is recommended to go to the hospital for examination, to clarify the cause of the symptomatic treatment.