The drugs for the treatment of thrombosis must be classified according to the site where the thrombosis occurs, which can occur in arteries or in veins. Arterial thrombosis is often secondary to atherosclerosis, and thrombosis is often caused by arterial stenosis, so the treatment is based on antiplatelet therapy, combined with anticoagulant drugs, such as oral aspirin plus hydroclopidogrel, or aspirin plus rivaroxaban, and vasodilator drugs. The treatment of thrombosis in veins mainly refers to the thrombosis in the deep veins of lower limbs, and the treatment of thrombosis in the deep veins of lower limbs is mainly based on anticoagulation therapy, and thrombolytic therapy can be given.