This study aims to explore the difference between pre-expectations and felt perceptions of Yangmingshan National Park tourists. A questionnaire was conducted, using the SERVQUAL measurement for data processing and analysis. Factor analysis of the items identified four factors; recreational service, recreational facilities, self-perceptions and mental perceptions, explaining 58.775% of total variance. The findings indicated that 26 of 28 items were significant differences, and the result showed that the factor of recreational service had the greatest impact. Based on the importance-performance analysis (I.P.A), the tourists' high level of pre-expectation and felt perception was 10 items, whereas high level of pre-expectation and low felt perception was 7 items. Both low ex-expectation and felt perceptions had 9 items. However, low pre-expectation and high felt perception had 2 items. These findings might serve as references for related planning in the future.