继报刊、广播、电视之后,互联网作为一种全新形态的传播媒介,已被公认为第四媒体。近年来,随着计算机家庭拥有率的快速提高以及众多网吧的出现,互联网的使用已经变得越来越普遍。这种发展态势,既对报刊、广播、电视三大传统媒体造成了冲击,同时又使各种媒介之间的竞争格局发生了深刻变化。那么,各种媒介之间的竞争到底呈现一种什么样的格局呢?本文利用2002年初 Following the press, radio and television, the Internet has been recognized as the fourth media as a new form of media. In recent years, the use of the Internet has become more and more common with the rapid increase of the computer home ownership rate and the emergence of many Internet cafes. This development trend not only affected the three traditional media outlets, newspapers and broadcast media, but also profoundly changed the competitive landscape among various media. So what kind of pattern does the competition among different media show? In this paper,