The purpose of this study was to investigate the performance strategies of professional swimmers in Taiwanese university. This study used a mixed methodology to examine the performance strategies of professional swimmers. The population sample included 297 professional swimmers in Taiwanese university and yielded 210 subjects. The response rate of this study was 70.71%. The study instrument utilized the Test of Performance Strategies (TOPS-R) questionnaire in Chinese version. The descriptive quantitative research results showed that (A) the professional swimmers of university in the performance strategy were in order as following: goal setting, imagery, activation, relaxation, self-talk, automaticity, distractability, negative thinking, and emotional control. (B) Male swimmers were significantly better than female swimmers in goal setting, activation, self-talk, and automaticity strategies. (C) The top three university swimmers were significantly better than the seventh to eighth swimmers in activation and automaticity strategies. Qualitative data showed that (A) These training environment, team impact, external factors, and personal attitudes would influence the swimmers to participate in training. (B) The competition results made the pressure on the swimmers; however, the pressure source disappeared when the external goal disappeared at the same time. Most of swimmers selected listening to music in order to decrease pressure and gained positive thought. (C) The swimmers' self-identity would help enhance their confidence. Most of them stay the modest learning in order to keep their goals. The study results recommend the professional swimmers and coaches should emphasize the goal setting strategy and strengthen their psychological skills to overcome the psychological barrier in the competition.