Tianjin is the present domestic equity exchange in addition to the new three board，stock company the most number of listed enterprises，market，the largest geographical coverage and the most widely established development for the longest one in equity market. This paper mainly revolves around：to build small micro enterprise oriented integrated financial services platform，and OTC markets become small micro enterprise grow two aspects of cultivation incubation bases，combining case show day exchange market innovation and development are introduced in seven years of experience in construction. Finally how to better play to the functions of the OTC market，promote small micro enterprise growth thinking and Suggestions are put forward.