Abstract: Using the JAS paradigm to study the existence of Informational Conformity in the online news comments, this paper explores the three factors that influence the conformity behavior:the positive and negative proportion of others' comments, the authority of other commentators, and the consistency of the nature of other commentaries and news materials. The results show that:(1) there is a conformity behavior of comments on online news, especially when you see others' positive comments; (2) when positive comments accounted for more than 50%, it is more likely to have a conformity behavior; (3) the authority of other commentators has no effect on the conformity behavior of the subjects; (4) when the material is positive and others' comments are negative, the subjects are more likely to have conformity behavior.