Varicose veins of the knee can generally be treated in three ways: minimally invasive treatment, conservative treatment, and traditional high level ligation and stripping of the saphenous vein. The details are as follows: 1. For minimally invasive treatment, it is mainly suitable for those who have early lesions and have cosmetic requirements, when the local blood vessels can be occluded through the use of electrocoagulation and sclerosis machines as well as lasers, so that it refers to achieve a healing effect, but such cases should usually be examined by lower limb vein ultrasound, which is more applicable if there is less valve regurgitation and no varicose veins in other parts. 2. Conservative treatment, which is more suitable for The patients who have varicose veins in other parts at the same time but don’t want to have surgery, can use elastic medical stockings and oral medication Avalanche or Mizarin, which can control the local condition and avoid the progress. 3.High ligation and stripping of saphenous vein is suitable for the patients who have late disease and have heavy valve regurgitation, through this procedure can achieve the purpose of radical cure.