Varicose veins are a common and frequent clinical disease. Conventional varicose vein stripping surgery, radiofrequency, and laser surgery are experienced by vascular surgeons in various tertiary and teaching hospitals, and some directors are often no longer involved in the treatment of such diseases. The special point is the blood flow correction surgery that preserves the saphenous vein, which was first introduced into China by Dr. Zhang Qiang in Shanghai, and Dr. Zhang and his team have the most thorough theoretical understanding of this surgical modality and the most surgical experience.