As a famous culture thinker in the 20th century, Marshall McLuhan attaches great importance to the profound influence of technology on social history. In McLuhan's eyes, the nature of technology is medium, an extension of human; technology revolutions bring cultural changes; technology changes lead to the changes of human's perception and create the “environment”. Both Marshall McLuhan and Karl Jaspers focus on the social cultural significance of technology, which shows strong humanistic spirit. But McLuhan's technology thought is more, since he views technology as an existence state of society, exceeding Jaspers's pure “theory of tools”.