Objective: To investigate the influence of subliminal social comparison on explicit selfevaluationbased on previous studies in the field of female body intention. How: The questionnairemethod was combined with the experimental method, and 80 female college students from a universityfor Minorities were recruited as subjects, including 20 from freshmen to seniors. The subscale of bodydissatisfaction (BD) was used for pre-experiment measurement, and two rounds of subthresholdemotional initiation task (SAP) were conducted. The independent variables were body dissatisfaction (highvs low) and test time (first vs second). The dependent variables were physical appearance state and TraitAnxiety Scale (PASTAS) scores. Results: There were significant differences in the body dissatisfaction offemale college students in different grades. The body dissatisfaction of freshman was significantly higherthan that of sophomore. There was no significant difference in the subgroup variables of PASTAS scoresbetween the two groups, but it showed a decreasing trend with increasing age. There was a significantpositive correlation between body dissatisfaction and the scores of the first PASTAS and a significantnegative correlation between the scores of the second PASTAS. There is a significant difference betweenHan and minority groups in the reaction of buttons when there are pictures of “thin ideal” models, andthe proportion of Han people who like to respond is significantly higher. Conclusion: The higher thedegree of body dissatisfaction, the more susceptible female college students are to subliminal socialcomparison, which leads to explicit negative self-evaluation; The degree of body appearance anxiety offemale college students will gradually decrease with the increase of age. Social comparison is automatic,female college students exposed to subthreshold upward social comparison have more negative evaluationof themselves, resulting in contrast effect; The influence of subthreshold social comparison on minorityfemale college students is less than that of Han female college students.