Under the dual factors of the promotion of local government and the active development of urban investment companies，carrying out financial business has become an important channel to help companies realize their transformation and development. Taking the development of Qingdao City Investment’s financial business as an example，this article expounds its relatively complete financial industry chain and its development results. City Investment Company should balance the expected risks and returns in developing its financial business，base itself on reducing the real economic risks，devote itself to improving the credit quality of the company，and innovatively serve the production and life of the city.