This study was to investigate the effects of planning behavior theory on tourist's tourist activities and intention to visit.,The survey was conducted from August 1, 2022 to August 31, 2022 for tourists during the summer vacation season, and 350 copies were used for the final analysis. First, the extended planning behavior will have a significant effect on tourism activities. The novelty, subjective norm, attachment and attitude have an effect on tourism activities, but the perceived behavior does not have an effect.,Second, there will be a difference according to gender in the extended planning behavior. As a result, there is a difference in novelty, subjective norm, perceived behavior, attachment and attitude.,Third, there will be a difference in tourism activities according to gender, and there is a difference according to gender.,Fourth, as a result of verifying that extended planning behavior will have a significant effect on visit intention, novelty, subjective norm, attachment and attitude have an effect on visit intention, but perceived behavior has been rejected.