In the early stages of varicose veins, there are usually no symptoms except for the appearance of prominent bruises. However, as the disease progresses (usually over several years to ten years), its harm gradually becomes apparent. 1. Swelling. Due to the reflux of veins, patients often show morning light and evening heavy swelling of the affected limbs. 2. Skin pigmentation. Long-term venous hypertension leads to increased capillary permeability in the calf area, making the skin darker and developing from dots to patches. 3.Bleeding. The skin in the area through which the varicose veins pass is very fragile due to insufficient nutrition. Once careless, it can easily lead to rupture of varicose veins and thus cause hemorrhage. 4. Ulcers. The most common consequence of varicose veins is the occurrence of ulcers caused by nutritional changes in the skin caused by varicose veins, and these ulcers can be long-lasting and locally foul-smelling and pus-flowing, which can bring serious effects on daily life and even malignant changes. 5.Venous thrombosis. Some patients can form thrombosis in the superficial veins of varicose veins, which is characterized by local redness, swelling and pain, hard lump formation, and pain affecting walking, and the thrombosis can also gradually spread to the deep veins leading to more serious complications. Because of these complications, early minimally invasive surgery can be considered once varicose veins are judged to be likely to develop. The benefits of early surgery are also obvious: first, minimally invasive surgery can be used, second, quicker and less painful postoperative recovery, and third, improved deep vein valve function and reduced recurrence rate.