：文章基于自我决定理论，针对中国背景下的网络微课社群的用户参与动机进行指标体系构建，通过网络问卷测量，使用探索性因子分析和验证性因子分析，共聚类出了七大用户参与动机。研究结果表明：对网络微课社群用户来说，从众和情感动机不是重要的参与动机，社交和信息动机属于较为重要的参与动机，兴趣、学习和分享动机是最主要的参与动机，由此推断出网络微课社群的构成要素为主题、输出与交互。

Based on self-determination theory, this paper aims to construct an index system of motivations of the participants of network micro-class community. Network questionnaire survey, exploratory factor analysis and confirmatory factor analysis were used to cluster seven participation motivations. The result showed that for users of network micro-class community, conformity motivation and emotional motivation are not main motivations; social motivation and information motivation are relatively important motivations. Interest, learning and sharing motivations are most important participation motivations of network micro-class community. Therefore, it is concluded that the elements of the network micro-class community are the subject, output and interaction.