Venous thrombosis often requires surgery in the acute phase of the disease, and small clots can be treated with oral anticoagulant or thrombolytic drugs. For patients with severe swelling and pain, this can lead to ischemia of the limb due to swelling, which if left untreated can lead to necrosis of the limb or induce pulmonary embolism, so timely surgical intervention is needed to remove the thrombus or to treat it with thrombolytic (e.g. urokinase, streptokinase, etc.) or anticoagulant (heparin, aspirin, etc.) therapy. DVT generally refers to acute venous thrombosis within one to two weeks, and patients need surgical treatment. For more than two weeks or even chronic patients, the main oral anticoagulant drugs for treatment, anticoagulant drugs can choose rivaroxaban or dabigatran, generally recommended oral about 3~6 months. Clinically, for patients with venous thrombosis, it is recommended to consult the vascular surgery department of regular hospitals.