This article tries to analyze the situation and trend of financial information service industry by micro research on four listed companies of this industry，in terms of basic situation，core competence，market performance. After nearly 20 years’ development，these four companies set the pace for the industry to some extent. As it said，this industry is in the direction of high market concentration even oligopoly，and in the process of transition. At the same time，technology brings new opportunities. With the development of Internet innovation and financial innovation，new market participants explore new business models in financial information service industry.