By establishing a macroeconomic model, the paper
calculated the
multiplier of the theoretical
fiscal policy and that of the actual fiscal policy. The result shows that neither of the multiplier value of fiscal policy is big, the multiplier value of actual function, in particular, is obviously low, while the crowding-out effect of fiscal policy is also not obvious. As regarding the affecting factors of multiplier, the possible reason lies in that the marginal consumption tendency is too low and there exists great hardness in consumption. According to the above calculated value, we also calculated the comprehensive multiplier effect of fiscal policy in two models. Apparently, fiscal policy is a major lever for government to control economy, in which the expenditure of government purchase is the most major policy tool. Furthermore, although there exists a great gap between
theoretical multiplier and
actual multiplier, the gap between the effects of promoting economy by their respective final multiplier effects is not large. The actual multiplier effects of fiscal policy surpass theoretical multiplier effects in most years.