Although Miss Li, a citizen of Nanjing, is only 25 years old, she has been suffering from varicose veins for 3 years, and she heard that there is no good way for varicose veins, only surgery, but she is afraid of surgery and worried about leaving scars, so she has not been treated. Because the blood vessels on the calf belly are curved and lumpy like earthworms, Miss Li has never dared to wear a skirt in the past few years. In the vascular surgery department of Gulou Hospital, with the help of new methods, Miss Wang said goodbye to varicose veins. After examination, it was found that Miss Li’s varicose veins actually did not need surgery, but could be treated by foam sclerotherapy on an outpatient basis. Miss Li immediately followed Director Ran’s advice and underwent this treatment, and sure enough, the varicose veins disappeared and left no scars. In the past, there were only two ways to treat varicose veins, one is surgery, including traditional surgery and nowadays minimally invasive small incision surgery, as well as laser, microwave radio frequency, electrocoagulation, etc. However, surgical treatment will have incisions and scars and cost more, and many patients are generally unwilling to operate as a last resort. Second is conservative treatment, including lower limb elevation, wearing elastic stockings, as well as medication, but conservative treatment can only reduce the symptoms, not cure, and may also need long-term medication. Now there is a new method of treating varicose veins, namely the new foam sclerosing agent technology, which injects sclerosing agent into varicose veins, resulting in vein spasm, wall attachment, local fixation, instant formation of thrombus, and replacement by fibrous cords (sclerosis) after the treated veins. This method is easy to operate, fast recovery, some patients do not even need to be hospitalized, outpatient treatment can be; less trauma, less bleeding, will not damage the saphenous nerve and lymphatic vessels; few complications, low recurrence rate, therefore, is a safe, economic, effective and aesthetic treatment method.