There are many reasons for coughing at night, such as cough variant asthma, gastroesophageal reflux disease, cardiac insufficiency and so on. 1. Cough variant asthma: a special type of asthma, mainly manifested as irritating dry cough, mostly at night and in the early morning, without obvious symptoms such as wheezing and shortness of breath. It can cause more than one cough at night. 2. Gastroesophageal reflux disease (GERD): a chronic disease in which the contents of the stomach and duodenum reflux into the esophagus, resulting in a series of symptoms. When sleeping in a flat state, the acidic reflux material may reflux into the throat, irritating the throat and trachea, causing coughing, pharyngeal discomfort and other symptoms. It can cause more than one cough at night. 3. Cardiac insufficiency: some patients with chronic cardiac insufficiency, lying down at night will appear to increase the amount of return blood, the heart load increases, aggravate the lungs bruises, causing coughing, accompanied by dyspnea, coughing up pink foamy sputum, need to consult a doctor in a timely manner. There are many reasons for coughing at night, and it is recommended that the patient go to the hospital in time to clarify the cause of the disease, and under the guidance of the doctor for treatment.