Lower extremity venous thrombosis is a common peripheral vascular disease due to a variety of common factors that are more likely to lead to lower extremity venous thrombosis. Lower extremity veins belong to the peripheral blood vessels, and lower extremity venous lesions belong to a kind of peripheral vascular lesions. Long-term bed rest in daily life leads to stagnation of blood flow in the veins of the lower extremities, trauma and other factors lead to increased platelets and thus high coagulation of the blood, as well as infections and other factors lead to damage to the walls of the veins, etc., which can easily lead to venous thrombosis of the lower extremities. In addition to the above factors, there are many other causes of lower extremity venous thrombosis. Once the diagnosis is confirmed, treatment should be actively carried out, and reasonable exercise and low-salt and low-fat diet should be paid attention to in daily life.