The choice of the optimal financing policy can avoid the problem of overinvestment and underinvestment, caused by the information asymmetry, to some extent. 企业是一系列契约的有机组合，不完备的股权和债权融资契约在企业契约体系中处于基础地位。
A proper selection of maturity structure of debt financing is for enterprises to reduce the cost and boost the revenue of debt financing in order to maximize the enterprise value. 企业对债权融资期限结构进行选择，目的是为了降低债权融资成本，提高债权融资的收益，最终促进企业价值最大化的实现。
