This study aimed at the relation among Recreationist-Environment Fit, Flow Experience and Place Attachment of Sun-Moon Lake travelers and the affection from the former two to place attachment. The method to carry out this study was using questionnaire survey, taking Sun-Moon Lake travelers as objects, analyzing questionnaires aiming at those recreationist-environment fit, flow experience, and place attachment. 400 questionnaires were sent out and 351 were returned (87.75%). After statistic analysis, which includes descriptive statistics, canonical analysis and multiple stepwise regression analysis, the result of this research showed that Sun-Moon Lake travelers' recreationist-environment fit and flow experiment have positive correlation. Management, attention, environmental resource, environmental function, and distorted sense of time are the significant variables of regression equations, whose joint explained variance is 40%. In terms of each variable, the best predictive power is management whose variance is 25.5%, and sequentially followed by attention (6.9%), environmental resource (4.9%), environmental function (1.5%), and distorted sense of time (1.3%). Management, environmental resource, and environmental function in recreationist-environment fit as well as both attention and distorted sense of time of flow experience of Sun-Moon Lake travelers are significant. In conclusion, management, environmental resource, and environmental function in recreationist-environment fit as well as both attention and distorted sense of time of flow experience of Sun-Moon Lake travelers are the main elements of prediction to place attachment.