This paper uses the method of fuzzy subaggregate to build a suitable membership degree function for analyzing the relation between aggregate saving and interest rate, make out a fuzzy curvilinear model for how adjusting interest rate and forecasting aggregate saving. 本文利用模糊子集的方法,构造一个恰当的隶属度函数,用以分析储蓄量&利率之间的关系,给出了如何调节利率,预测储蓄量的模糊曲线模型。