Cough at night is considered to be cough variant asthma, chronic left heart failure, tuberculosis and other diseases, need to take the relevant drugs for the cause of the disease. 1. Cough variant asthma: most patients can inhale small doses of glucocorticosteroids plus beta agonists such as budesonide formoterol powder inhaler, and seldom need oral glucocorticosteroids such as prednisone. 2. Chronic left heart failure: patients need to take oral furosemide, hydrochlorothiazide, spironolactone and other diuretics, as well as bisoprolol, metoprolol succinate and other beta-blockers, and isosorbide nitrate and other vasodilators. 3. Tuberculosis: patients need to apply rifampicin, isoniazid, ethambutol and other drugs under the guidance of doctors. If hemoptysis exists, hemostatic drugs such as aminocaproic acid and aminomethylenic acid need to be applied as prescribed by the doctor. Usually, there is no special food in the diet, but it is necessary to ensure a balanced intake of various nutrients and a reasonable combination of meals. There may be other diseases that cause nighttime coughing, so it is recommended that patients with frequent nighttime coughing go to the hospital to get a clear understanding of the specific cause, and cooperate with the doctor to actively treat the original disease.