Varicose veins in the lower extremities are a common and troublesome disease for workers who stand for long periods of time. The beautiful legs become unattractive due to increased venous pressure in the lower extremities from prolonged standing or the combination of venous valve insufficiency resulting in dilated and tortuous superficial veins. Currently there are three main types of treatment for varicose veins in the lower extremities: foam sclerotherapy, surgical spot stripping technique, and endovenous radiofrequency or laser treatment. Foam sclerotherapy is popular among patients because it is simple, minimally invasive, safe, reliable, basically painless, and low cost. It is also basically scarless and meets the cosmetic requirements of people. A good number of patients do not need to be hospitalized, and can go home after observation of no discomfort after outpatient injection, which is convenient and quick. The main treatment of foam sclerotherapy: 1, branch vein treatment. 2.Local varicose veins such as superficial veins and recurrent veins left after surgery or other treatments. 3, the size of the saphenous vein high ligation and penetration branch vein ligation after varicose veins, if the varicose veins into a mass, complicated by mild thrombosis and inflammatory reaction, after lifting the leg varicose veins can atrophy emptying, can also be used sclerotherapy. The procedure of sclerotherapy: the affected limb is lowered, the varicose vein is filled, and the sclerosing agent is dispensed. The injection needle is stabbed into the vessel, then the affected limb is elevated, the needle is fixed and not moved, and the sclerosing agent is slowly injected, and after the bandage is wrapped, the patient can walk as usual after the injection.