The history of 100 years of exploration and struggle shows that, at the fundamental level, the capability of the Communist Party of China and the strengths of socialism with Chinese characteristics are attributable to the fact that Marxism works. General Secretary Xi Jinping advocates that China's Communists should regard Marxist philosophy as a special skill, which contains deep logical necessity of history, reality and theory. It is a historical necessity for China's Communists in the new era to inherit the glorious tradition of learning and applying Marxist philosophy. It is also a realistic necessity for China's Communists in the new era to effectively resolve the problems of reform and development with the philosophical thinking. It is also a theoretical necessity for China's Communists in the new era to see through the cognitive premise and methodological significance of Marxist philosophy for the Sinicization of Marxism, and to give full play to the universal and lasting guiding role of Marxist philosophy in order to further promote the Sinicization of Marxism.