The onset of vascular blockage is usually more rapid, and if the blocked blood vessel is the blood vessel of the heart, brain and other important organs, it is more likely to be life-threatening. Clinical treatment methods such as drugs and surgery are usually used. 1. Drugs: Urokinase, streptokinase and other drugs can be used for thrombolytic therapy. Thrombolytic therapy should be carried out as early as possible, usually not more than 6 hours. However, active bleeding and recent spontaneous cerebral hemorrhage, pregnant women, elderly patients older than 70 should be prohibited. And the patient’s vital signs should be constantly monitored during thrombolysis to prevent hemorrhage induced by thrombolysis. 2. Surgery: Interventional surgery can be used to perform related operations and further treatments, such as removing thrombus, placing inferior vena cava filter, stent implantation and so on. Interventional surgery is safer and more timely than drug therapy, and is usually the first choice if contraindications and indications are excluded. Patients are advised to go to regular hospitals, complete the relevant examinations and follow the doctor’s instructions.