In the 40 years of China's reform and opening up, every generation of leaders attach great importance to the quality of opening up and constantly expand the breadth and depth of opening up. Reform and opening up is a process of gradual development, deepening and perfecting, and the exploration and innovation of each generation of leading collectives. Reform and opening up is based on the specific national conditions of China, and the comprehensive deepening of reform in China in the new era has its unique background, which is based on the national conditions, the comprehensive and deepening relationship and the "four comprehensive" strategic layout; the reform with Chinese characteristics is unified with the development of Marxism, and deepening reform in an all-round way is the persistence and development of Marxism in the new era and a new way of thinking for the development of socialism. Total Deepening the reform is to practice the Marxist people-oriented concept, to seek the welfare of the broad masses of the people, and to further promote the perfection and development of the socialist system with Chinese characteristics.