Lower limb varicose veins are a very common disease, manifested as a worm-like blue raised vein mass in the lower leg, the lower leg will be sore and uncomfortable after long standing, and it will be aggravated after busy work, some patients develop to advanced stage, the lower leg swells after long standing, and calf dermatitis and eczema can also appear, and the serious one will rupture and bleed, and finally it can lead to a long-lasting ankle ulcer, that is “old rotten leg”. At present, the vascular surgery department of our hospital has long said goodbye to the history of “skinning”, and we have adopted a variety of minimally invasive techniques such as microscopic incision, lumpectomy (SEPS), laser (EVLT), electrocoagulation, etc. At present, we have also introduced the most advanced international “foam sclerotherapy technology”. “This technique is the most safe, effective and aesthetic minimally invasive method recognized internationally and has been widely used in Europe and America for nearly a decade, especially for patients with mild to moderate varicose veins. The method is to mix the drug with sterile air into a very small foam and inject it into the varicose vein to “squeeze” the blood out of the vessel, but the foam does not flow with the blood, but stays in the varicose vein and the vessel wall, causing sterile inflammation of the vessel wall and subsequent occlusion of the varicose vein to achieve the treatment effect. The advantages are incomparable to the traditional liquid sclerotherapy. The technique is almost painless, fast recovery, high safety and leaves no scars on the legs, especially after the procedure, the efficacy is completely comparable to the traditional surgery. Those who are engaged in long term standing should know how to prevent varicose veins, they need to move their legs every 20 minutes or so after standing for a long time. Cycling, brisk walking, jogging, etc. can promote the contraction of calf muscles to speed up the venous blood flow back and reduce the venous pressure, in addition to wearing sequential decompression elastic stockings, is also an effective way to prevent varicose veins.