Many varicose vein patients have this question: “My varicose veins have been there for many years, and they don’t hurt or itch, do I have to have surgery?” Some other patients complain as soon as they enter the clinic, “My varicose veins have been said to be operated many years ago by the doctor, but I put it off and put it off again and again, and it has become like this, I really regret it!” These patients went from “no pain” to “regret”, what happened in the meantime? In fact, varicose veins are generally asymptomatic in the early stage except for the appearance of prominent bruises. However, as the disease progresses (usually after several years to ten years), its harm gradually appears. 1. Edema. Due to the reflux of veins, patients often show morning light and evening heavy edema of the affected limbs. 2. Skin pigmentation. Long-term venous hypertension leads to increased capillary permeability in the calf area, rupture of red blood cells after exudation, and deposition of ferritin under the skin, making the skin darker, developing from dots to flakes. 3. Bleeding. The skin in the area through which varicose veins pass is very fragile due to insufficient nutrition. Once careless, it can easily lead to rupture of the varicose vein thus causing hemorrhage. Since the bleeding is often not accompanied by other symptoms such as pain, the patient often does not notice it, but if it happens at night while sleeping, it can lead to very serious consequences. 4. Ulcers. The most common consequence of varicose veins is that varicose veins cause skin nutrient changes leading to ulcers, which can be long-lasting and locally foul-smelling and pus-flowing, which can bring serious impact on daily life. 5.Venous thrombosis. Some patients can form thrombosis in the superficial varicose vein, which is characterized by local redness, swelling and pain, hard lump formation and pain affecting walking. If left untreated, the thrombus may spread upward or through the traffic vein to the deep vein, causing deep vein thrombosis and risk of life-threatening pulmonary embolism. 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 is possible, second, faster and less painful postoperative recovery, and third, improved deep vein valve function and reduced recurrence rates.