Pulmonary rehabilitation is not only the rehabilitation of lung function, it is a holistic rehabilitation process. Pulmonary rehabilitation is a continuation of clinical treatment and is one of the effective measures to promote the recovery of patients with pulmonary diseases. Contraindications to pulmonary rehabilitation are as follows: 1. ischemic heart disease: patients with ischemic heart disease should not undergo pulmonary rehabilitation; 2. pericardial tamponade: patients with increased myocardial activity, pulmonary rehabilitation will increase the burden on the heart; 3. abnormal liver function: such as hepatocellular carcinoma, low liver function, etc., pulmonary rehabilitation will increase the burden on the patient’s liver; 4. acute stage of coronary artery disease: it is recommended that the patient stabilize the condition before undergoing pulmonary rehabilitation therapy. 5. .Severe lung infection with severe systemic symptoms