Nowadays, many Chinese second tier cities are developing rapidly based on the development of manufacturing Industry, forming the industry structure: the manufacturing industry is parallel with the primary tier city, but the modern service industry is mainly depended on the primary tier city. This paper systemically describes the characteristics and contributing of modern service industry with the guidance of the scientific developing philosophy, including five dimensions; meanwhile, this paper creates the strategic developing model of second tier cities' modern service industry from the perspectives of concepts, system, organization, market, department, time and interspaces, and applied to the Suzhou cities' modern service industry development, achieving distinguished performance.