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 從信息的角度分析,信貸合約交易機(jī)制的出現(xiàn),在一定程度上減少了初始金融交易者雙方的信息不對稱,它生產(chǎn)信息的成本遠(yuǎn)遠(yuǎn)低于單個投資者的成本,它的存在符合效率原則。