The supplyside structural reform is a major theoretical innovation made by the Party Central Committee with the leader of Xi Jinping, which helps the new normal economic development of China. The severe challenges of the lack of economic power in domestic market and the weak global economic growth after the financial crisis make the supplyside structural reform be necessary and Marx’s economic sharing thought provides ideas for the reform. Marx’s economic sharing thought is mainly embodied in three aspects: the sharing of production factors, the sharing of production process and the sharing of products. According to Marx’s economic sharing thought, there are obvious problems in China now, such as uneven allocation of factors of production, unbalanced industrial structure and unequal sharing of production. Such problems hinder the development of economy and the realization of sharing. Therefore, in order to strengthen the inner power of economic growth and achieve the rapid economic development, it is necessary to improve the supplyside structural reform in terms of improving the efficiency of production factor allocation, optimizing the industrial structure and perfecting the guarantee of product sharing.