OBJECTIVE To retrospectively analyze the experiences and results of the treatment on 62 patients with primary varicose of lower extremities with endovenous laser. METHODS All patients were treated with endovenous laser. The laser treatment could begin when the fiber withdraw with 1 cm/2 s. The laser power was 10 - 12 w with the laser pulse duration and the interval 1 second respectively. RESULTS The duration of follow-up varied from 2 months to 8 months. After endovenous treatment, the varicose veins and edema disappeared in all cases. The itching and uncomfortable feeling was dissipated. No morphine-like analgesic has been used and no serious complications occurred. CONCLUSION Endovenous laser treatment of primary varicose of lower extremities is a safe and effective technique.