Abstract Airport is an important gate for people travel from a country to other countries. Facing the globalizing travel market, Taiwan Taoyuan International Airport has to improve continually to maintain the international competitiveness. The airport services include transportation services for passenger and cargo, but passenger transportation service is the main service of airports. Accordingly, this study will base on the viewpoint of passenger to investigate the way for improving the airport service quality. First, this research investigates the service quality of ten airports in Pacific Asia based on cicerones’ viewpoint, and these data are analyzed by the fuzzy theory method for gaining the rank of Taiwan Taoyuan International Airport in Pacific Asia. Then, we survey the degree of importance for each item of airport service and its complacence for Taiwan Taoyuan International Airport. Finally, through the analysis of importance-performance matrix, we provide some suggestions for improving the competitiveness of Taiwan Taoyuan International Airport.