Patients with fewer leg clots and better general condition can usually be cured, while patients with more leg clots and severe symptoms may not have a very good treatment effect. Whether or not the leg thrombus can be cured is based on the patient’s specific condition to determine, thrombus site only a few general can be cured through the drug thrombolysis. If there are more thrombus sites, and the effect of drug thrombolysis is not good in the case of the need for surgical removal of the thrombus, the general effect of this situation will not be too ideal. If the patient’s lower limbs are severely swollen, the skin temperature decreases, and even necrosis has occurred, it is necessary to immediately amputate the limbs, simple thrombolytic anticoagulant treatment has not been very useful, and delayed treatment may even be life-threatening.