This research will investigate the correlation of participant motivation and the flowing experience of the participants swimming across Sun Moon Lake. The research method of this study is questionnaire and the objects are the participants swimming across Sun Moon Lake in 2004. The delivered questionnaires are 1000 copies and 532 copies are collected; however there are only 387 valid ones. The instruments of the research include the participant motivation questionnaire, the flowing experience questionnaire and the SPSS statistic soft ware and dealed with by canonical correlation and stepwise of the regression. The result of the study shows: there are three significant canonical correlations between the all sub-scales of the participant motivation and flowing experience questionnaire, and there many sub-scales of the participation motivation can predict each sub-scale of the flowing experience.