Postoperative pulmonary infections after aortic dissection generally require treatment such as drug therapy and symptomatic support, and can be categorized into postoperative perioperative pulmonary infections and post-discharge pulmonary infections. 1. Postoperative perioperative lung infection: broad-spectrum antibiotics or combination drugs, such as cefdinir, are used for treatment. High dose, short course of treatment, to prevent the production of drug-resistant bacteria, at the same time, sputum culture, blood culture and drug sensitivity test, choose the appropriate antibiotics. At the same time, strengthen the respiratory management, nutritional symptomatic supportive treatment. 2. Lung infection after discharge from the hospital: consult the doctor in the hospital for mild lung infection and take oral antibiotics, such as amoxicillin. Moderate to severe lung infections require hospitalization, and according to sputum culture and drug sensitivity test, appropriate antibiotics are selected, as well as symptomatic support and other treatments. Postoperative lung infection after aortic dissection is recommended to be treated in time to avoid delaying the disease.