There are three main outcomes of thrombosis: First, at the time of thrombosis, whether arterial or venous, the thrombus is completely removed by surgical removal of the thrombus, and the thrombus does not recur, in which case the blood vessel will return to its original state and will not leave any sequelae. Secondly, after thrombosis, anticoagulant drugs and thrombolytic drugs are used, and the thrombus is completely dissolved without leaving any traces, which can be seen in the process of thrombolysis, but the percentage of patients who can be completely dissolved is very small. Thirdly, in most cases, the thrombus is not completely dissolved and the blood vessels are partially reopened, which will be accompanied by the destruction of venous valves in the lower limbs, causing edema and varicose veins in the future, and for the arteries, the arterial supply may be insufficient due to the narrowing of the vascular wall, and the above three kinds of endings are the results of the normal thrombus.