The survival time of patients with pulmonary embolism after conservative treatment cannot be generalized. It is related to the infarct area, location and timely treatment, and requires specific analysis of the problem. Pulmonary embolism means that the pulmonary vessels are blocked by emboli of unknown origin. Patients with mild pulmonary embolism with small embolism area can be cured by anticoagulation or thrombolytic therapy if they actively cooperate with doctors in time, and it does not affect their normal life expectancy; however, if the patient has a large infarction and the infarction site is located in large blood vessels, the prognosis is usually poor and death is possible at any time if the patient cannot be treated in time. In addition, if patients have chronic thromboembolic pulmonary hypertension with pulmonary heart disease, they may show decreased physical strength and lower limb edema, and generally need long-term oxygenation, and their survival time will be greatly shortened, mostly ranging from 3-5 years. In addition, patients with pulmonary embolism need to continue to take oral anticoagulant drugs, prevent colds, quit smoking and alcohol after discharge. Wear elastic stockings to prevent varicose veins in the lower extremities and keep bowel movements smooth.