Abstract: Objective: To investigate the curative effects of endovenous laser in the treatment of varicose great saphenous veins.Methods: One hundred and seventy-nine limbs(138 patients) with varicose great saphenous veins were treated with high ligated,the venous trunk and lower leg varicose veins were treated with photocoagulation.Local resection or dot stripping were performed in severely varicose veins of shank.Results: The cure rate was 96.9%(172/179).Six cases with remnant varicose veins after operation were cured by resection under local anesthesia or laser photocoagulation again.The local funicular callosity in 124 great saphenous veins and shank,and skin ambustion in 5 cases were found.The duration of postoperative hospital stay was 4 to 7 days.One hundred and twenty-one cases were followed for 1 to 20 months,no case recurred.Conclusions: Endovenous laser for treating varicose great saphenous veins is micro-trauma and good effects.