自从美国有线电视新闻网（CNN）20年前首创全新闻频道以来，各国电视界对全新闻频道的兴趣与日俱增。人们认识到，在媒介科技飞速发展、频道大量增殖、受众日益分割的今天，特殊频道的作用日益突出。全新闻频道不仅是一种高效的传播方式，也在一个巨大的传播市场。欧美国家纷纷 Since CNN pioneered the All News Channel 20 years ago, there has been a growing interest in the news channel in all countries in the television industry. It is recognized that, with the rapid development of media technology, the proliferation of channels and the increasingly divided audience, special channels have become increasingly prominent. The news channel is not only an efficient means of communication, but also a huge market. Europe and the United States have one after another