The emergence of credit contract trade mechanism has reduced the asymmetric information of initial finance negociants both sides in some degree from the analysis information angle . the cost of its production information is lower far away than that of individual investment person . and its existence fits the efficiency principle 从信息的角度分析，信贷合约交易机制的出现，在一定程度上减少了初始金融交易者双方的信息不对称，它生产信息的成本远远低于单个投资者的成本，它的存在符合效率原则。
