：在线学术社交平台为科研工作者提供了一种新型的学术社交方式，文章试图从用户使用的角度对在线学术社交平台的用户行为进行研究。以ResearchGate平台南京大学的用户为研究对象，采用相关性分析、社交网络分析等方法，从用户活跃度、用户使用行为关系、用户合作网络等方面对平台的用户行为特征进行研究。研究发现，平台上用户的使用状况受学科背景影响，理工类用户活跃度较高；用户上传、阅读、引用行为之间存在相关关系；校内用户持续与校外用户合作更易产生稳定的合作团体。

Online academic social platform provides researchers with a new way of academic social interaction. This study attempts to examine the user behaviors of online academic social platform from the perspective of user usage. Users of ResearchGate in Nanjing University as the research object and their behavioral characteristics are examined with the correlation analysis and social network analysis about their activity, behaviors, cooperation network and so on. The research discovers that the status of users' usage on the platform is influenced by the background of their academic subject to a large extent, for instance, the users majored in science and technology are far more active than others; There exists a relationship among uploading, reading and citing behaviors; It is easier to generate a stable cooperative group when users in school retain working with the external users.