Based on the experiential values theories of Mathwick, Malhotra and Rigdon (2001), including consumer return on investment, service excellence, aesthetics and playfulness, the purpose of this study was to discuss their experiential values after consumers visited Blue Lagoon and Formosa Fun Coast Theme Park. Analysis methods, such as factor analysis, t-test, MANOVA and correlation analysis were operated to analyze collected data through questionnaire. The results indicated that consumers visiting these two parks were at the same percentage. The majority of consumers was male, single, at the age of 21 to 30, had college education, and earned $20,001-$40,000 per month. Blue Lagoon or Formosa Fun Coast theme park, gender and marital status had significant differences in factors of experiential values. Age, education background, monthly income and resident location had significant interactions with experiential values. The outcomes in correlation analysis were shown significant difference, of which “consumer return on investment” had the closest relationship with “playfulness” and “service excellence”. It is suggested that Blue Lagoon and Formosa Fun Coast Theme Park strengthen distinguish service and amusing facilities in order to enforce consumers’ experiential values, deepen consumers’ impression, win consumers’ recognition of the theme park and importantly, draw consumers back to visit Blue Lagoon and Formosa Fun Coast Theme Park again.