本文首先对已有的“第四媒体”的广义定义提出了质疑 ,指出将因特网定义为“第四媒体”是不合适的 ,并对“第四媒体”的内涵作了图文说明。继而从技术和传播学的双重角度概述了“第四媒体”的主要特征 ,最后深入论述了“第四媒体”对传统媒体所产生的综合效应 In the first place, this article questions the general definition of “the fourth media” and points out that it is inappropriate to define the Internet as the “fourth media” and illustrates the connotation of the “fourth media”. Then it summarizes the main features of the “fourth media” from the dual perspectives of technology and communication. Finally, it elaborates on the comprehensive effects of the “fourth media” on traditional media