External treatments have various curative effects. So it had been used to cure various patients. But, it has a limited sphere of application in the present South Korea. Therefore we would like to bring out its sphere of application and detailed method in the oriental medicine classics. Especially, we would like to bring out external use of medecal herbs at base of External treatments. And then we have arrived at following conclusions. 238 species herbs have been used externalpreparation. comparatively often used a herbal medicines are Argyi Wormwood Leaf(艾), Realgar(雄黃), Croton Seed(巴豆), Musk(麝香), Cochinchina Momordica Seed(木鱉仁), Glycyrrhiza uralensis(甘草) and Chuanxiong Rhizome(川芎).