First of all，this article unifies the background of our country smalland medium-sized enterprise financing difficult，the over-the-counter trading market in Tianjin stock exchange as the representative of the equity to carry out this kind of enterprise financing，legal basis，the significance of business process，the scale of financing are analyzed；secondly，the lack of regular of the management of small and medium-sized enterprise，banks involved in the problem due to the lack of enthusiasm，the lack of institutional construction and lack of the guiden of government policy issues etc；finally，on this basis to effectively promoting the construction of the OTC market and advancing the development of small and medium-sized enterprise stock exchange equity pledge business we give policy recommendations.