As a traditional treatment for varicose veins, saphenous vein high ligation and stripping has a history of hundreds of years and is the classic procedure for treating varicose veins in the lower extremities. However, this procedure still suffers from poor aesthetics, long operation time, intraoperative bleeding, slow recovery, and long hospital stay. Injecting sclerosing agent for varicose veins has the disadvantages of inaccurate efficacy, high recurrence rate and ulcer formation due to infection at the injection site. The latest Dornier laser treatment instrument introduced by our vascular surgery department from Germany is the most technologically advanced technology for treating varicose veins in the lower limbs, which has been carried out and applied in developed countries in Europe and America for many years and is well received by patients, especially female patients with cosmetic needs. It can precisely destroy the inner wall of blood vessels, achieve vascular closure and fibrosis, and thus achieve the purpose of treating varicose veins in lower limbs according to the characteristics of thermal energy and tissue laser effect of laser. 810nm wavelength laser pulse issued by optically coupled light source has high absorption rate of melanin and deoxygenated hemoglobin, and at the same time of vaporization and cutting, the safe treatment of 12w power, 1 second pulse, 1 second interval. In the mode, it also has the effect of coagulation and hemostasis. The technique has moderate penetration and little extravascular damage, which is suitable for minimally invasive treatment in the venous cavity. The method has the advantages of high controllability, exact efficacy, minimally invasive, simple manipulation, no incision, small trauma, short operation time, no pain, no bleeding, no scar, increased aesthetics, few complications, fast recovery, low recurrence rate, etc. It also has the safety of high efficiency. The whole procedure takes only half an hour, and the effect of varicose veins can be seen during the operation such as the disappearance of varicose masses, and the patient can keep normal activities without being bedridden after the operation, and can be discharged from the hospital 2 or 3 days after the operation, which can effectively improve the leg signs, and is extremely suitable for those patients who cannot bear the operation due to other diseases and have cosmetic needs, which greatly reduces the time and economic burden of the patient, and can effectively relieve the pain of various refractory lower limb varicose veins in combination with traditional surgical methods. Various symptoms and complications caused by refractory varicose veins of lower limbs, such as swelling of lower limbs, thrombophlebitis, pigmentation of lower limbs, eczema and ulcers, have a broad application prospect. Compared with traditional surgery, it has the advantages of exact efficacy, no incision, small trauma, no bleeding, fast recovery, no scar, low recurrence rate, etc. Patients do not need to be hospitalized, and can see obvious efficacy after surgery.