With the rapid development of Internet technology, the higher demand for information and more convenient way to access information give the conduct of human life a dramatic impact. Most recent Internet users who would like to gather information will use the Search Engine first but lots of them will also focus in certain special Thematic Website to acquire more complete and in-depth information. Based on this demand, there are more and more such websites created and grown with high efficiency. This trend reveals that Thematic Website has equal scale of advertising business opportunity as Search Engine Website. However, there are numerous competitors providing the homogeneity website in this information-rich environment. Under this condition, how to grasp the unique value and correct operation of the direction for such websites is the focus of development strategy. Moreover, how to operate virtual community to create content (co-create) and gather the knowledge by network interaction is a main trend for Thematic Website to enhance competitiveness and cohesion of the user currently. Therefore, the research of this thesis was aimed to analyze the key success factors of Thematic Website by conducting the management and development of the virtual community within this kind of website, including their interaction behavior and the commercial activity. The main research way is to explore the relevant literatures that discussing the successful factor of information content website and management of virtual community, and then to compile a viable theme with these arguments about the successful factor related to the subject in this thesis. According to Analytic Hierarchy Process (AHP), we designed the questionnaire and invited the webmaster and senior users belonged to two successful Thematic Websites (BAHAMUT and Fashion Guide) to be the research objects. Through the calculating with the data weighting and further analysis, the conclusion is provided in this thesis to make recommendations for Thematic Website development and business strategy on the frame of reference.