网络空间是现实空间的延伸 ,是对现实空间的虚拟 ,是现实空间的映射。网络空间与现实空间的差异是导致网络信息传播中矛盾与冲突的根本原因。其矛盾与冲突表现在八个方面 :网络开放性与网络安全性 ;信息主权与信息霸权 ;信息超载与信息短缺 ;信息污染与信息有效性 ,信息共享与信息垄断 ;个人隐私与社会监督 ;信息利用与知识产权保护 ;信息自由主义与社会责任 Cyberspace is an extension of the real space, is the virtual reality space, is the mapping of the real space. The difference between cyberspace and reality space is the root cause of the contradictions and conflicts in the dissemination of network information. Its contradictions and conflicts are manifested in eight aspects: network openness and cyber security; information sovereignty and information hegemony; information overload and information shortage; information pollution and information validity; information sharing and information monopoly; personal privacy and social supervision; information Utilization and Intellectual Property Protection; Information Liberalism and Social Responsibility