A new advancement in the current treatment modality for varicose veins of the lower extremities is endovenous radiofrequency treatment. Radiofrequency ablation vein closure refers to the ultrasound-guided introduction of radiofrequency ablation catheter into the diseased vein through the skin puncture opening, and the injection of swelling fluid around the varicose vein through ultrasound guidance, so that the vein is pressurized to empty the residual blood, and the catheter transmits the energy to the wall of the vein in the form of heat to promote the contraction of varicose veins, occlusion, which belongs to a new type of treatment for saphenous vein varicose veins. Radiofrequency ablation vein closure can close the lumen of the vein for the purpose of closure, but also because of the formation of thermal insulation effect due to the injection of swelling fluid to reduce the skin damage and postoperative pain sensation caused by high temperature ablation. Compared with traditional surgery, it has the advantages of less trauma and faster recovery. Compared with this latest treatment method, it is superior to other surgical treatments. However, one needs to be aware of the indications and contraindications of this treatment. Therefore, it is recommended that patients with varicose veins of the lower extremities choose the most appropriate treatment under the guidance of their doctors.