Can lead to the elderly dry cough, no sputum of many diseases, mainly including the following kinds of diseases: 1, cough variant asthma, if the patient after bronchodilator test, lung function and other related tests diagnosed as cough variant asthma, first of all to get rid of the allergic substances, inhalation of glucocorticosteroids, as well as bronchodilators, oral leukotriene modifiers, menglustat sodium, etc.; 2, long-term smoking patients appearing Irritating dry cough, need to pay attention to lung malignant tumor, need to improve lung CT, bronchoscopy and other related examinations, diagnosed as lung malignant tumor need to carry out anti-tumor treatment, including surgical treatment, radiotherapy, chemotherapy, target cell drug therapy, etc.; 3, gastroesophageal reflux can also appear dry cough symptoms, the patient at the same time will be accompanied by acid reflux, abdominal distension, nausea, and other related symptoms, after diagnosed with gastroesophageal reflux disease, may be Oral pantoprazole, domperidone and other related drugs, while paying attention to diet.