Blank paper system is the commercial activities between the parties in order to facilitate trading and increase the flow rate of paper generated, the theory of traditional instruments of alienation in the appearance of uncertainty is the result of the development of commodity economy. In China, "instrument" not only on the blank money orders, blank promissory note does not provide, and the provisions of the blank check too simple, it is difficult to adapt to the needs of economic development a reality, and to explore the theory and put forward the necessary legislative proposals. In this paper, an overview of the system of blank paper and the focus of the issue of theory, analysis and drawing on blank paper outside the legislation, pointed out that China's lack of legislation blank paper, blank paper in China to improve the legislative proposals.