With a fame of no-chimney industry, tourism is no doubt a popular industry universally emphatic for countries all over the world, which simultaneously with high-tech industry is perceived as the star industry in 21 century. It is significantly advantageous in creating job opportunity and making money of foreign exchange. As the Taiwan's government earnestly plans to double the number of foreign tourists visiting Taiwan in recent years, it has become an important topic of marketing strategy as how to progressively develop Taiwan's tourism industry. As far as the marketing strategy is concerned, it can be achieved by analyzing the theory of five Ps marketing strategy of product, price, promotion, place and people. From these five distinctive factors, the current study is to examine the key success factors that most attract foreign tourists to visit Taiwan. In doing so, we may find the critical factors such as Taiwan’s distinctive characteristics and niches which can use the differential positioning of Taiwan from other countries and which can market Taiwan in the world marketplace. The ultimate goal is to bring Taiwan to the stage of the world, and achieve the Executive Yuan Council's objective of doubling the number of foreign tourists to visit Taiwan.