Abstract: In order to identify and analyze the micro blogging opinion leaders of quality circle, the researchers select 100 micro bloggers, with label of “quality” and high follower number on Sina micro blog, as an object to study current situation of micro blogging circle by social network analysis methods. According to the matrix constructed by micro blogger, the opinion leaders can be found by community diagram, indegree of centrality, cohesive subgroup activity. Quality micro blogging circle have formed micro blogging knowledge network centered on opinion leaders which can be divided into celebrity and experts. For the opinion leaders, the quality of micro article significantly affects the number of followers.