If often in the middle of the night more than two o’clock when there is a cough, the main consideration is due to the cardiopulmonary function is not good caused by chronic bronchitis, bronchial asthma, due to sleep at night when the vagus nerve is more excited, will cause bronchial spasms, will affect the respiration caused by hypoxia, there will be the phenomenon of coughing, need to dilate the bronchial tube of the drug to treat. In the night sleep lying down will also increase the amount of return blood, will increase the burden on the heart, will affect the blood circulation of the lungs caused by pulmonary stasis, prone to cough in the middle of the night phenomenon, generally need to use cardiotonic, diuretic drugs to treat. In normal times also need to pay attention to diet to improve the body’s resistance, but also to improve the function of the heart and lungs.