Abstract: Taking author co-citation analysis of Bernal Prize recipients as a method, this study combines the technologies of multivariate analysis and social network analysis to visualize the intellectual structure of STS field by using the SPSS and Ucinet software. The results show there are seven academic subgroups. We identify the subjects of each subgroup and list in descending order by weight in factor analysis: micro-level approach of SSK, feminist studies of science and technology, institutional sociology of science, technology studies, controversy and risk studies, macro-level approach of SSK, history of science and technology. The recipients’ research contents intermingle a lot, and research subjects permeate each other alternately. Bruno Latour is the most influential scholar in STS field, although Thomas Kuhn is the most influential STS scholar in the field of humanities and social science.