Classical economic school advocates that supply creates self demand and believes that the economy can not have lasting surplus, however, supply school highlights the role of tax reduction and incentive to the economic growth, although their some ideas are controversial, their rationality and enlightenment can not be denied. According to current economic situation, Chinese neo-supply school suggests to make reform at supply side, the demand management of Keynesianism can increase output and employment level but it is not always effective. The organic integration of supply management and demand management is the objective requirement for stabilizing economic prosperity and boosting long-term economic growth, and it has certain achievement in the practice, but its effective implementation has a lot of difficulties, it needs to master the macro-economic situation in order to realize the predicted goal of policy regulation.