Coughing at night and not coughing during the day may be caused by chronic heart failure, cough variant asthma, reflux esophagitis, etc., and can be relieved by symptomatic use of medications. 1. Chronic heart failure: due to the night lying down to sleep, back to the heart blood volume increases, there may be night cough daytime cough. In this case, treatment should be directed at heart disease, such as the use of digoxin tablets and other cardiac drugs treatment. 2. Cough variant asthma: mostly caused by environmental and genetic factors, the lower temperature at night can stimulate the respiratory tract and cough. Drugs such as budesonide and salbutamol can be used to relieve respiratory spasm and reduce airway inflammation. 3. Reflux esophagitis: when lying down at night, the gastroduodenal contents are prone to reflux stimulation of the pharynx, appearing at night coughing during the day without coughing. At this time, the use of omeprazole and other acid-suppressing drugs for treatment. Note that the above drugs should be used under the guidance of a doctor, avoid unauthorized use of drugs to avoid adverse effects. If the symptoms are not relieved by the above methods, it is recommended to consult a doctor in time, complete the relevant examinations, clarify the cause of the disease, and target treatment.