Invisible Man writen by Amefican black writer Ralph Ellison iS the most impo~ant literary WOrk in America. From the existential perspective he reveals the intense conflicts between the white and black.in spite of the traditional and cuhural conflicts the black strives to find out the value and narure of their existences and achieve~eedom the end. This paper foeuses on a black man's freedom 。responsibility and action.