Abstract: At present, consumption plays a more and more important role in China’s economic development, which means that the continuous expansion of domestic demand market scale and the ability to optimize and upgrade the consumption structure have increasingly become the basic conditions for the formation of China’s high-quality economic development model. To build a driving mechanism for sustainable growth of national income is the decisive factor to promote the continuous expansion of domestic demand market scale and the optimization and upgrading of consumption structure. On the basis of reexamination and in-depth analysis of the theory of supply side demand side symbiosis and mutual decisive relationship, the mechanism of primary distribution and redistribution in the national income distribution system and the theory of mutual relationship, this paper systematically summarizes and analyzes the feasible ways and outstanding obstacles for China to implement the strategy of “national income multiplication plan” at this stage. Therefore, from the perspective of national primary distribution mechanism, this paper proposes an important way to reasonably promote the common and sustainable promotion of all departments’ labor productivity and total factor productivity, and accelerate the formation of coordinated growth mechanism of productivity and wage income. From the perspective of national redistribution mechanism, accelerate the construction of new enterprise system and financial system in line with the basic principles of socialism with Chinese characteristics as an important channel mechanism to “broaden the most extensive channels of property income of residents”. The most important thing is to implement China’s “national income multiplication plan” strategy, whether in the initial distribution mechanism or the redistribution mechanism, it needs the intervention and integrated development path of the government and market functions.