The purpose of this study was to discuss service quality, satisfaction evaluation, tourist behavior, and loyalty while tourists visiting theme parks. The structures of recognized service quality and satisfaction were first built, and then tourists' behavior and loyalty were analyzed. From March 25(superscript th) to April 8(superscript th), 2007, 395 questionnaires were completely responded in Janfusun Fancy World with a 98.75% of return rate. The findings of the analyzed results were as follows: (1) Under the analysis of ANOVA, there was no significant difference between different population statistic variables and service and loyalty except that tourists with different occupation had significant difference on environment convenience. (2) The chart of service quality and satisfaction was analyzed by the factor analysis and divided into five structures: environment convenience, employee performance, facility reliability, considerate care, and show planning. The chart of tourist loyalty was divided into three structures: positive recommendation, negative public complaint, and negative private complaint. (3) The correlation among service quality, satisfaction, and loyalty was analyzed by the interactive structure analysis, and showed that there was correlation among the variables. (4) The recognized service quality and loyalty of tourists could predict their loyalty. The results of this study were provided as reference for business to increase satisfaction and loyalty by improving service quality, and for future scholars to apply this study structure to studying in different tourism business.