This research main discussion open water diver to be engaged in the leisure diving activity participation the motive and the participation degree of satisfaction situation. Take the south Kenting waters as the foothold and I-Shou University the student take the primary participation diving as the research object. Altogether sends out 200 to recycle 184. Deducts invalid asks volume 16, amounts to returns-ratio 92%. Uses the tool is「the Open water Diver participates in the motive and the degree of satisfaction investigation meter」. After t-test, One-way ANOVA and Pearson correlation analysis, obtains the following findings: (1) The different sex Open water diver has in the participation diving movement participation motive and the degree of satisfaction aspect reveals the difference. The masculine Open water diver in ”stimulates avoids” and ”the leisure relaxes” is higher than the feminine Open water diver. The expression male meets the affiliation by to have the challenge diving activity to relieve intense and relieves the pressure. Makes the mind to feel comfortable and is relaxed, moreover thought the entire activity has the leisure to relax the effect. (2) The Open water diver participates in the Scuba diving movement the participation motive and the leisure degree of satisfaction various aspects reaches to the related standard. Participation motive expression participation Scuba diving activity higher, its degree of satisfaction is also higher.