The Research Of The Dynamic Mechanism Which Used To Imorove The Quality Of China's Economic Growth Under The New Normal

China's economy faces many challenges in the new normal, the existing economic growth engine already couldn't meet the requirement of the new stage of development, for the sustainable development of the economy under the new normal, it is not only need to change the pattern of economic growth, but also need to adjust the economic growth target, we should not only focus on the size of economic growth,but also emphasize the improvement of the quality. Based on the judgment of the economic growth phase and the current situation of our country's economy, In this paper, I research the dynamic mechanism to improve the quality of China's Economic growth.This article compares the difference of the quantitative economic growth and the qualitiative economic growth and analyzes the dynamic mechanisms in the two phase, using the statistical description analysis to judging the fluctuation change of the quality of economic growth and the dynamic mechanism in our country, which can reflect the characteristics of the quantitative phase and the qualitiative phase of China's economic; What's more,this article estimate dynamic mechanism which impact on the China's economic growth, economic structure optimization and effectiveness to improve economic growth from 1980 by using the VAR model.the result shows that, firstly, the physical capital is not only the main production factor to improve the quality of economic growth in all aspects,but also the main factor which causes the change of them. Although both the consumption and investment will have a pulling effect on economic growth and structural optimization, but it will not promote effectively the achievement distribution, the demand of consumption is the cause of the change of the economic quantity and fluctuation of industrial structure, and the demand of investment will cause distribution of volatility. The institutional supply could helps economic accumulation and optimizing economic structure, the marketization and opening are the main causes to improve the effectiveness of economic growth and the fluctuation of industrial structure, effectiveness and economic growth is mainly related to the opening and the nationalization. the technological innovation is beneficial to the quantity and structure of economy, and could improve the accumulation of national quality, however, only the output of technology innovation can reduce the income gap, and can cause the quantity of economic growth and fluctuation of industrial structure, and the investment of technology innovation can cause fluctuations in the effectiveness of the economic growth. Finally, with the effect of dynamic mechanism for China's economic growth, we should build the high quality of the factor dynamic mechanism, make a harmonious structure of the consumption and investment, optimize the institutional supply the perfect system supply forces mechanism as well cultivate the comprehensive technical innovation mechanism in order to improve the quality of economic growth in our country under the new normal effectively.