Children do not cough during the day and cough at night for the common causes of cough variant asthma, gastroesophageal reflux, sinusitis, etc., but may also be physiological, can be used to improve lifestyle, medication and other methods of treatment. 1. Physiological: children do not cough during the day and cough at night may be due to the night air is cooler, or night diet salty, spicy stimulation, etc. Parents should pay attention to the child to keep warm, sleep at night covered with a good blanket. At the same time, the diet should be as light as possible, to avoid spicy stimulation, etc., generally more can be relieved. 2. Cough variant asthma: If the child is allergic, with repeated eczema or allergic rhinitis history, it is necessary to pay attention to the possibility of cough variant asthma. Due to the increased vagal excitability at night, bronchospasm will occur to induce cough exacerbation. At this time, budesonide nebulized inhalation can be given, and in severe cases, oral montelukast sodium or other desensitizing drugs can be used. 3. Gastroesophageal reflux: children do not cough during the day and cough at night may also be caused by gastroesophageal reflux, parents should feed a small number of times, sleep can be appropriate to elevate the child’s head, neck and shoulders, to help alleviate the symptoms of coughing at night. 4. Sinus inflammation: children sleep at night when the position changes, the nasal cavity of the inflammatory secretions can flow back to the throat, stimulate the throat cough. At this time should first solve the inflammation of the sinus, if necessary, can do nasal irrigation and other treatments. When children do not cough during the day and cough at night, after eliminating physiological causes, they should consult a doctor in time to avoid delaying the condition. The use of medication should follow the doctor’s instructions.