Three-word pairs were used to construct two structures of social situations: circular transitive structure and linear transitive structure, and the processing mechanism of social structure was investigated by the Plausible Scenario Judgment Task and ERP technology. The results show that compared with the linear structure, the circular structure induces a significant priming effect, induces a smaller P200, a larger N400, and a smaller P600. This indicates that the subjects have the cognitive characteristics of circular structural balance. Possible exclamation points to the circular transitive structure schema preference of Chinese culture and supports the cultural constructivist view of social structure cognition.