Sclerotherapy has a therapeutic role in the treatment of varicose veins. Sclerotherapy is reliable for varicose veins that are more limited or as an adjunct to other minimally invasive or surgical treatments. Sclerotherapy involves injecting a sclerosing agent into the varicose veins to cause aseptic inflammation of the vein lining to cause the vessel lumen to adhere and close; polydocanol and 50% hyperglycemia are commonly used sclerosing agents. The purpose of sclerotherapy is to ultimately transform into fibrous cords, it is suitable for localized lesions, and is effective for vessels up to 6mm, while varicose vein injection sclerotherapy can be used as an adjunctive treatment to surgery, and for stump varicose veins, the effect is equivalent to resection of the varicose veins. Varicose vein sclerotherapy has the advantages of no incision and aesthetic appearance, etc. After sclerotherapy, the affected area should be compressed with external medical compression stockings or elastic bandages, and care should be taken to prevent sclerosing agent leakage from causing tissue inflammation, necrosis, or entering the deep veins to cause blood clots. When varicose veins appear, you should consult the doctor in time, must be under the guidance of the doctor for treatment, daily life should try to avoid doing strenuous exercise, avoid squatting, weight-bearing and other exercises to increase the load on the veins, and at the same time to quit smoking, eat some spicy food.