Basing on the construction of bank,guarantee corporation and technology enterprises-basic government cooperation financing mode,this paper simulate futures margin system,so as to effectivelycontrol the credit risk.The core of the financing mode is the use of technology,accordingto the enterprise risk condition,this system provide the initial rate of security for enterprise;then,the guarantee rate is recalculated and adjusted in next period in order to thus the charge certain guaranteefees,All above could make sure the risk of the Guarantee Corporation in according with it’sguarantee return.