[目的 /意义]通过分析虚拟学术群组中用户的基本属性和行为数据,能够了解用户的加入动机和群组的形成因素,从而为群组发展、学术交流以及科研管理提供帮助。[方法 /过程]从用户在虚拟群组中角色、行为习惯以及用户间相互关系和现实社会中的身份、学科领域以及兴趣等角度综合分析群组成员加入群组的动机,并根据用户加入群组的时间分析群组动态演变情况。[结果 /结论]用户的学科和研究兴趣是群组形成和发展的重要影响因素;群组有助于构建研究合作网络,其学科多样性的优势能够促进学术交流;当前虚拟学术群组的效用未充分发挥;群组的发展过程呈现一定规律。 [Purpose / Significance] By analyzing the basic attributes and behavior data of users in the virtual academic group, we can understand the user’s motivation for joining and the formation of groups, so as to help group development, academic exchange and scientific research management. [Method / Process] The motivation of the group members to join the group is comprehensively analyzed from the perspectives of the user’s role, behavior habit and inter-user relationship in the virtual group, and the identities, disciplines and interests in the real world. Group time to analyze the dynamic evolution of the group. [Results / Conclusions] The users’ disciplines and research interests are important influencing factors for the formation and development of the group. The groups contribute to the construction of the research cooperation network. The advantages of the diversity of disciplines can promote academic exchanges. The effectiveness of the current virtual academic groups Did not give full play to the group’s development process presents a certain law.