国债规模的扩大在一定程度上缓解了财政困难 ,增强了宏观调控能力 ,但是国债规模也不能无限扩大。只有保持适度的国债规模 ,才能充分地发挥国债对经济的宏观调控功能。为保持适度的国债规模 ,必须压缩财政赤字 ,正确把握国债发行规模的界限 ,降低国债发行成本 ,推行国债有偿使用制度 ,建立偿债基金机制。 To some extent, the expansion of the national debt has alleviated the financial difficulties and strengthened the capacity of macro-control. However, the size of the national debt can not be expanded indefinitely. Only by maintaining the proper scale of government bonds can we fully exert the national debt’s macro-control over the economy. In order to maintain the proper scale of government bonds, we must reduce the fiscal deficit, correctly grasp the boundaries of the national debt issuance scale, lower the issue cost of government bonds, implement the system of paid use of treasury bonds and establish a mechanism of debt service.