在封闭经济中 ,投资与消费是经济增长的两个内生因素 ,积极的财政政策难以维持经济的长期、稳定、持续增长。本文结合我国储蓄不断增长的情况 ,对影响经济增长的这三个方面进行了深入分析 ,得出了解决我国当前民间投资与消费双不足的关键在于收入公平分配 ,并进而提出了具体的解决办法。In the confining economy,investment and expenditure remains to be two inner factors of economic growth,active fiscal policy can’t guarrante a long-term、steady、sustainable growth. The paper analyses three facters infacting economic growth and put forward the key way to solve the efficiency between civial investment and expenditure lies in distributing income fairly