Abstract: The new technologies such as network have embeded in each part of science knowledge production and knowledge sharing and collaboration based on network have become important character in the contemporary era.This paper analysises the connotation and function of knowledge co-production in network information space.Then it points out that science knowledge production based on network has presented four characters:openess of knowledge publishing and academic evaluation, universality of knowledge communication and Scientific research cooperation, collaboration of knowledge and virtual reconstruction of scientific community,diachronic of knowledge production and increasing.Then it concludes that mordern scientists must study and utilize network resource if they want to Participate in global collaboration and competition.

摘要： 网络等新技术已嵌入科学知识生产活动的各个环节，基于网络的知识共享与协同创作已成为当代科学知识生产的重要特征。文章以arXiv知识协同创作模式为例，分析了网络信息空间中知识共生产的内涵与功能，进而指出：基于网络的科学知识生产活动已经呈现出知识发表与学术评价的开放性、知识传播与科研合作的广泛性、知识的协同创作与科学共同体的虚拟重构、知识生产与知识增长的历时性等新特征，并认为当代科学家只有注意学习和利用网络资源，才能更好地参与国际科技合作与竞争。

关键词: 信息共享, arXiv, 科学知识生产, 协同创作, information sharing, arXiv, science knowledge production, collaborative working.