Elderly people generally have weaker resistance and are prone to infections and cough and sputum. If the patient does not have obvious underlying diseases, he or she can take some cough and sputum medicines orally, and if necessary, anti-inflammatory drugs such as cephalosporin or penicillin. However, if the patient has underlying lung disease, such as bronchiectasis or chronic obstructive pulmonary disease, if coughing and sputum appear, which may indicate the onset of the primary disease, anti-inflammatory, cough and sputum relief and other treatments should be given. If the effect of formal treatment is not good, it is important to go to the hospital for further examination, such as photographs, chest CT and other examinations, to further clarify whether there are other lung diseases causing the patient to cough and sputum. The elderly should eat a lighter diet, less greasy and stimulating food, and pay more attention to rest.