Purpose: This study was to verify the difference between reaction time of information processing and decision making information related with physical activity according to exercise self-schema. So it would have the hypothesis that exercise self-schema affected to judgement, remember and expectation of the content related with physical activity. Methods: The participants of experiment were 36(male:15, female21,Mage=21.25). Task was presented at computer screen. Participants reaction time and contents were saved automatically. And it was measured the physical activity’s amount for 7 days through questionnaire. All anaysis were conducted by SPSS 18.0 and AMOS 18. Results: It was shown that the participants who had higher exercise self-schema had faster information processing about physical activity content than the participants who had lower exercise self-schema. Also group of higher exercise self-schema had more vocabulary comments. And at the expect behavior related physical activity, the group of higher exercise-self schema seek more physical activity than the group of lower exercise self-schema. Finally, higher exercise self-schema group had more physical activity. Conclusion: it had identified that exercise self-schema was significant factor at information processing related physical activity. So it is needed to study and develop the program which help developing exercise self-schema.