As time progresses, the current trend of low birth rate and consequent aging society has brought about changes to the family structure, with the behaviors of getting along between generations and among multiple generations becoming different from those of traditional society in the past. Middle-aged and older people who maintain better intergenerational relationship perceive higher life satisfaction. Furthermore, such people can obtain respect and contentment. Therefore, to enable middle-aged and older people to achieve successful aging, the extent to which middle-aged and older people value intergenerational relationship and their satisfaction with intergenerational relationship are worth investigating. In this study, the theory of intergenerational relationship, Importance Performance Analysis, is utilized as the framework to explore middle-aged and older people’s importance and satisfaction with intergenerational relationship and investigate the quadrant placement of all the dimensions of such relationship. A questionnaire survey was conducted in Nantou County, and 385 valid questionnaires were obtained. The questionnaires were analyzed by SPSS 18.0, and the Cartesian coordinate map of IPA was applied to probe into the distribution of the factors used to explore intergenerational relationship. The results show that among three dimensions – Interaction, Instrumental Support, and Emotional Support - seven factors were categorized in the fourth quadrant. This indicates that while middle-aged and older people perceive intergenerational relationship to be highly important, the satisfaction they derive from such relationship is low. Educators and Ministry of Health and Welfare professionals can use the result to plan future policy aimed at strengthening and improving intergenerational relationship.