An aging driving method of a field emission display device can secure long lifetimes of panel by reducing possibilities of generation of arcing, by largely increasing energy distribution under a low voltage, and by applying a pulse voltage which is varied to reduce energy distribution under a high voltage as time goes, in aging processing. In addition, aging is performed in a very short time by using small energy in a pulse supply, thereby preventing a damage of a panel and much shortening an aging time. In addition, aging is performed in each pre-aging process and a main-aging process, to reduce contaminants, thereby lengthening lifetimes of a panel and securing reliability of a product.