In case of coughing for six months, it is important to check chest CT and chest MRI. First of all, the occurrence of bronchiectasis, chronic bronchitis, and lung tumors may lead to long-term coughing, which requires targeted treatment for different causes. For example, cough caused by bronchiectasis occurs, and in addition to the symptoms of coughing, it is accompanied by a large amount of purulent sputum, and it is important to perform postural sputum removal treatment every morning and evening. In the case of acute infection, sputum culture is also required, and according to the results of drug sensitivity tests, appropriate sensitive antibiotics are selected for intravenous drip treatment. If the cough is caused by chronic bronchitis, treatment in the acute phase is the same as for bronchiectasis; if the cough occurs to be caused by a lung tumor, early surgical treatment is more effective. Secondly, cough caused by cough variant asthma cannot be ruled out and requires physical nebulizer inhalation of bronchodilators and glucocorticoids for relief, such as terbutaline sulfate and budesonide.