Cough for two months, the daytime does not cough at night cough for a number of reasons, common such as cough variant asthma, cardiac insufficiency, gastroesophageal reflux disease and so on. 1. Cough variant asthma: a special type of asthma, mainly manifested as irritating dry cough, mostly at night and early morning episodes, without obvious wheezing, shortness of breath and other symptoms. It can be treated with inhaled glucocorticosteroids (e.g. budesonide) and bronchodilators (e.g. salbutamol) under doctor’s supervision. 2. Cardiac insufficiency: some patients with chronic cardiac insufficiency, lying down at night, there will be an increase in the volume of return blood, increased cardiac load, aggravated pulmonary stasis, causing coughing, accompanied by dyspnea, coughing up pink foamy sputum, you can take the sitting position, the symptom can be alleviated, but it is necessary to consult a doctor in a timely manner. 3. Gastroesophageal reflux disease (GERD): lying down, acidic reflux may reflux into the throat, irritating the throat and trachea, causing coughing at night, throat discomfort and other symptoms. Omeprazole and domperidone can be used under the guidance of a doctor. There are many reasons for not coughing during the day and coughing at night, but also can be seen in chronic obstructive pulmonary disease, chronic bronchitis, bronchial dilatation and other airway secretions in the position change when the airway mucosa stimulation caused by coughing, but also can be seen in the nasal secretion reflux stimulation of the pharynx caused by coughing, you should go to the hospital in a timely manner, to clarify the cause of the disease, and under the guidance of the doctor to carry out the treatment.