Varicose vein disease of the lower extremities, also known as chronic venous insufficiency of the lower extremities, is a common peripheral vascular disease, with a prevalence of 27% of the population and a family history of almost 70%. and signs. The main clinical manifestations are dilatation, bulging, tortuous masses of superficial veins in the lower extremities, or the formation of venous nodules. In the early stage of the disease, the affected limb is sore, swollen, heavy, and weak, which is obvious when standing and relieved after walking, lying down or when the limb is elevated, or there is numbness and pain. In the late stage of the disease, edema, rough skin, flaking, atrophy, pigmentation, skin and subcutaneous tissue sclerosis, eczema thrombosis, bleeding, refractory ulcers, etc. Some refractory ulcers may also lead to cancer, which seriously affects normal work and life. I. Stages of varicose veins in lower limbs: Stage 1: limited bruising or capillary dilation in lower limbs Stage 2: width of bruising greater than 3 mm or bulging out of the skin Stage 3: earthworm varicose above the skin Stage 4: earthworm varicose into a mass Stage 5: with pigmentation or varicose veins accumulating above the knee joint Stage 6: blackening of the skin, bleeding or ulcers Second, prevention and treatment of varicose veins in lower limbs 1. (1) Conservative treatment is suitable for those with small scope, light degree and no obvious symptoms; (2) Pregnant women; (3) Poor general condition cannot tolerate surgery; (4) Older patients who are unwilling to operate. (2) Method: Adopt elastic bandage or elastic stocking to compress varicose veins of lower limbs (mainly calves) to promote deep venous blood return and reduce swelling, distension or heaviness of affected limbs. The best effect is achieved by sequential decompression elastic stockings, including short, medium and pantyhose, which are chosen according to the condition. 2.Laser minimally invasive treatment Laser minimally invasive treatment is suitable for the treatment of varicose veins with mild lesions or calf lesions with ulcers mainly, its advantages: 1.Minimally invasive surgery, small and few incisions, or no incisions, less bleeding less trauma, reduce scarring and postoperative infection. 2.Rapid recovery: short surgery time, mild postoperative pain, patients can maintain normal activities after surgery, fast recovery, short hospitalization. 3.Aesthetics after surgery 4.Less complications: It is highly effective and safe, and rarely causes serious complications. 3.Surgical treatment Those who are diagnosed with varicose veins and have obvious clinical symptoms and signs should undergo surgical treatment as long as they can tolerate the surgery. At present, the modified saphenous vein high ligation trunk stripping plus varicose vein dot stripping is significantly less traumatic than the traditional surgery, the scar is not obvious, the efficacy is exact, the recurrence rate is low, combined with laser treatment, the visible wound is not obvious, so the modified surgery is also known as leg surgery.