Summary: margin business to start is to improve China's capital market has a far-reaching measures, so as to China's stock market "unilateral market" situation to an end this article on our history and introduction of margin trading The main impact of a brief summary, based on the popular focus on the decentralization of foreign credit brokerage, securities finance companies focused on specialized credit and securities lending market, three focus modes of the horizontal margin comparative analysis of the system, then there is for to put forward to further promoting China's margin policy proposals for business development with a view to the healthy development of domestic capital markets will benefit. Keywords: margin, stock market, trading