Along with the gradual promotion of construction of the over-the-counter market in our country,the number of small and medium-sized enterprises listing for trading is increasing. To protect the lawful rights and interests of investors better and provide strong guarantee for the healthy and orderly development of small and medium-sized enterprises,setting up a perfect and scientific wind control system which leads to form the effective risk control mechanism has become the an important task in the process of over-the-counter market construction. <<