Many academic studies reveal that a business culture oriented towards internal marketing is an important condition of management success in the service industry and that administrative performance is increased through employee job satisfaction. This study focuses on Taiwan's international tourist hotels to conduct an empirical investigation into the correlations among internal marketing, business culture, job satisfaction, and administrative performance. The conclusions drawn by this study reveal four important findings: (1) There is a significant positive correlation between business culture and internal marketing. (2) There is a significant positive correlation between internal marketing and job satisfaction. (3) There is a significant positive correlation between internal marketing and administrative performance. (4) There is a significant positive correlation between job satisfaction and administrative performance. These findings can serve as a reference for relevant academic studies as well as for firm executives and administrators in the service industry.