傳播科技的發展使資訊在生產、播放、展示和儲存方面都有了巨大 的變化，使大眾傳播變得更加便捷、繁泛和具有互動性。這些變化給中 國大陸的傳播體制帶來多方面的挑戰：第一，打破了官方對外來資訊的 封鎖；第二，打破了大一統的傳播方式；第三，加強了受眾的反饋能 力，使宣傳為主的單向傳播朝雙向和多向方面發展；第四，使人際傳播 和大眾傳播，國内傳播和國際傳播的界限變得糢糊，造成官方資訊控 制的困難。面對這些挑戰，中國大陸的傳播政策趨向嚴格化和細緻化， 並從控制傳媒轉向重點控制民眾的傳播行為。

New media technologies have made mass communication more individualistic as the media devices become smaller and more convenient to use. Such changes pose direct challenges to those governments that want to exercise strong controls over mass communication for various reasons, and raise new questions for the long-existing freedom vs. control of information debate. This paper explores the impact of new media technologies on a country’s media system and communication policies through a case ' idy of the development and deployment of new media technologies in China. Through historical review and documentary analysis, this paper discusses the potential impact of new media technologies on China’s media system.