With the advent of hi-tech era, the Internet brings an epoch-making and revolutionary impact on traditional communication media. It provides China with a newly rising and convenient communication tool. On the other hand, it also makes China encounter predicaments and difficulties, which are not effectively and feasibly controlled. This research is expected to examine and analyze China's current deepening economic reform and opening-up policy as well as actively developing the technology and infrastructure of Internet. Through analyzing historical documents and relevant articles, the research is conducted to make comparison between China's application and practice of Internet by traditional media and Internet media. The part Internet plays and its characteristic and nature on the Chinese mainland are also studied. This study of its evolution and transmission in historical process is to realize the nature, the policy of development, practical operation. The impact and future possible development trend may be hopefully predicted.