Pulmonary obstruction and chronic obstructive pulmonary disease are different. Pulmonary obstruction mainly refers to pulmonary vascular disease, which generally refers to pulmonary embolism, that is, pulmonary artery obstruction due to various reasons, the more common cause is the lower extremity deep vein thrombosis dislodged. The typical symptoms of pulmonary embolism are hemoptysis, chest pain and dyspnea, and the diagnosis mainly relies on pulmonary artery CT, and the treatment is mainly anticoagulation or thrombolytic therapy. Chronic obstructive pulmonary disease is caused by chronic inflammation of the airways, resulting in coughing, coughing and wheezing, and the symptoms of wheezing are obvious after activity, and the symptoms are usually aggravated in autumn and winter.