The objective of this study was to investigate the effect of Mobile-Based CMB-I(cognitive bias modification-interpretation) on emotion and cognition of high evaluative concerns perfectionism individuals. In this study, former CBM-I program was implemented with a mobile-based application program. A total of 454 individuals were asked to answer Multi-dimensionl Perfectionism Scale (FMPS, HMPS). The top 25% rankers were selected and 41 of them participated in this study. They were randomly assigned to two group: CBM-I group(n=21), waiting list condition group(n=20). Participants replied to questions in surveys before conducting the CMB-I, soon after conducting the CBM-I, and at follow-up (7 days after conducting the CBM-I). Their emotions(PANAS), fear of negative evaluation(BFNE), and worry(PSWQ) were measured. For analysis, repeated measure ANOVA and paired t-test were conducted. As a result, CBM-I group showed significant decrease in negative affect, fear of negative evaluation, and worry. These results indicate that mobile-based CBM-I is effective for reducing negative affect, fear of negative evaluation, and worry of high evaluative concerns perfectionism individuals. Limitations of this study and direction for a further study regrading intervention using a mobile-based application, interpretation bias, and modification for high evaluative concerns of perfectionism individuals are provided.