Older adults with a bad cough should be taken to the hospital for a chest CT to see if it is caused by pneumonia, bronchitis, tuberculosis, pleural effusion or lung tumors. If the cough is caused by inflammation of the lungs, sensitive antibiotics should be given in a timely manner. The commonly used antibiotics for the elderly are cephalosporins and macrolides. It is also important to pay attention to the characteristics of the cough. If the cough attacks in the early morning, lung function, bronchial excitation test and bronchodilatation test should be checked if necessary to exclude cough variant asthma. If the cough is accompanied by shortness of breath in the elderly, heart failure, pericardial effusion and other heart diseases should be ruled out and an electrocardiogram and cardiac ultrasound should be performed if necessary. Elderly people with chronic cough also need to pay attention to their diet. They should not eat spicy, greasy or irritating food, should not eat too much sweet food, should drink plenty of warm water to keep their respiratory tract moist, and should have convection of indoor air.