Varicose veins of the lower limbs are the most common peripheral vascular diseases, commonly manifested as: earthworm-like tortuous expansion of superficial veins of the lower limbs, lower limbs acidity, discomfort and edema, skin pigmentation, dermatitis, ulcers, etc., affecting the work life. The common cause of varicose veins is incomplete closure of superficial vein valves leading to downward reflux of venous blood. There are many methods of treatment, but the ultimate goal is to eliminate venous reflux, surgical methods: traditional saphenous vein ligation and stripping, minimally invasive stripping combined with radiofrequency, electrocoagulation, laser, foam sclerotherapy injection, etc., and the ultimate goal is to occlude the refluxing superficial veins to remove the varicose superficial veins. In outpatient clinic or online many varicose vein patients will ask: doctor my superficial vein occlusion is not one less blood vessel will there be side effects? Will the occlusion of superficial veins increase the burden on the deep veins as they are not working and are relying on the deep veins for reflux? I will tell the patient that occlusion of the superficial vein will not increase the burden on the deep veins, but on the contrary, it will reduce the burden on the deep veins. Give you a simple example to understand why the aim of minimally invasive radiofrequency treatment of varicose veins is to achieve superficial vein occlusion. In normal people, both sets of venous return system of deep and superficial veins of lower limbs will play their role in transporting venous blood containing waste to the lungs to complete the blood circulation and metabolism; in normal people, these two systems are united to accomplish a common goal, but in patients with varicose veins of shallow lower limbs, due to the incomplete closure of valves of shallow veins of lower limbs, which leads to the venous blood reflux, the waste blood stagnation and causes the superficial venous varicose veins to be stagnant, the superficial veins not only do not work, but also put the deep venous return back to the lungs. The superficial veins not only don’t work, but also part of the blood returning from the deep veins is also stolen and refluxed down, and a part of it returns to the deep veins through the traffic branch, but it increases the workload of the deep veins, and the superficial vein system doesn’t unite with the deep veins, but it messes up the system of the deep veins, and the more serious the superficial vein lesion is, the more the deep vein’s burden is, and the superficial vein lesion, if it’s not treated in time, can drag the deep veins into the trouble. If the superficial veins are occluded in time, the superficial veins can no longer do bad things, and since there are no superficial veins to mess up, the deep veins can easily accomplish their tasks without adding extra workload, that is to say, treating the superficial vein lesions in time not only doesn’t increase the burden of the deep veins, but on the contrary, it reduces the burden of the deep veins, and in the long run, it protects the deep veins. Therefore, radiofrequency occlusion of superficial lower extremity varicose veins not only does not increase the burden on the deep veins, but on the contrary, it reduces the burden on the deep veins of the lower extremities! Normal veins Venous valve closure insufficiency reverse flow