The purpose of this study was twofold. First, it aimed to investigate the difference between socially anxious group and non-anxious group in interpreting ambiguous situations, specifying in which aspect the two groups differs. Second, following the induction of positive or negative self-image, we examined whether the induced self-image affected interpretation bias in the socially anxious group. To examine their interpretation bias, we translated the Adolescents' Interpretation and Belief Questionnaire (AIBQ) into Korean and developed the Korean version of the Interpretation and Belief Questionnaire (KIBQ). Participants rated each explanation (positive, negative and neutral) for the extent to which it would come to their mind easily if this event happened to them. Forty-five undergraduate students were recruited after being screened for social anxiety using the Korean version of the Social Avoidance and Distress Scale (K-SAD) and the Brief-Fear of Negative Evaluation Scale (B-FNE). Thirty socially anxious participants and 15 non-anxious participants completed the Set A of the KIBQ. The result showed that the socially anxious group interpreted ambiguous social and nonsocial situations more negatively and less positively compared to the non-anxious control group. To explore the effect of self-image on interpretation bias, socially anxious group was divided into two groups based on the induction condition (positive vs. negative self-images) and completed the Set B of the KIBQ following the self-image induction. Results revealed that the negative self-image induction group interpreted ambiguous social situations more negatively and less positively compared to the positive self-image induction group. In contrast, there was no group difference in interpreting ambiguous nonsocial situations. Implication of the findings and directions for future research were discussed.