Pulmonary embolism is a relatively common clinical disease, with many and complex inducing factors. The most common cause of pulmonary embolism in patients is due primarily to thrombi dislodging from the veins of the lower limbs or the pelvic deep veins, traveling through the bloodstream to the pulmonary arteries, thus causing the disease. Therefore, bed rest is essential during the acute phase of pulmonary embolism. The purpose of bed rest is to prevent further embolisms, to avoid the dislodging of pelvic or lower limb deep vein thrombi, which could lead to the formation of new thrombi. Therefore, for patients with pulmonary embolism, it is crucial to provide timely treatments such as thrombolysis to control the clinical symptoms caused by the pulmonary embolism effectively.