Older people have relatively more chances of forming blood clots in their legs than younger people. How to treat should follow the following aspects: First, pay attention to control the diet, the diet is based on low-salt, low-fat and low-cholesterol food to reduce the cholesterol content in the body as well as the abnormal blood lipids, so as to avoid the development of atherosclerosis into thrombosis. Second, to carry out drug intervention therapy, clinically commonly used in anti-thrombotic drugs such as resulvastatin calcium, aspirin, clopidogrel, etc.. Some traditional Chinese medicines also have good effect, and the application of drugs such as blood plugging and ginseng rhizome glucose injection can improve the blood circulation in the legs of lower limbs and prevent the formation of thrombosis. Thirdly, if the thrombosis is more serious, it can be treated by means of surgery. The commonly used clinical methods for the treatment of venous thrombosis and arterial thrombosis in the lower limbs are: embolism pulling and stenting of veins and arteries. Through these treatments, the problem of thrombosis in the legs of the elderly can be relieved.