The Communist Party of China has a profound historical logic, theoretical logic and realistic logic of self-revolution. From the perspective of historical logic, when the Communist Party of China was founded, people were reflecting on the disadvantages of party politics in the early Republic of China. The pursuit of fame and power has become the hallmark of political parties. In such an atmosphere, Chen Duxiu and other early communists had the consciousness and efforts to transform the party, and devoted themselves to building the Communist Party of China into a new political party different from the old ones. In terms of theoretical guidance, the Communist Party of China, guided by Marxism, adheres to the value of "people first" and takes the interests of the greatest number of people as its most fundamental value pursuit. Therefore, the Communist Party of China has no special interests of its own. It does not seek its own interests or practice favoritism. This value position gives the Communist Party of China the courage and determination to take the interests of the people as its final measure, dare to turn inward and fight against all words and deeds that are not conducive to the realization of the interests of the people. From the perspective of practical needs, the ruling position of the Communist Party of China and the steep tests and dangers it faces urge the Communist Party of China to always keep the revolutionary enthusiasm, strengthen its own construction, forge a solid organization, and provide the most solid organizational foundation for the realization of the great rejuvenation of the Chinese nation. From the 100-year history of the Communist Party of China, the spirit of self-revolution is a strong support for the Communist Party of China to keep its youth forever. Self-revolution was gradually formed and developed during the period of the new democratic revolution. It was well inherited for a period of time after the founding of new China. It was further developed in the new period of reform and opening up and socialist modernization. After entering the new era of socialism with Chinese characteristics, self revolution was further emphasized, fully practiced and developed. It has become a regular practice of the CPC to resolve intra party contradictions through self-revolution. To break away from the influence of wrong ideas, lines and policies and establish the correct line and direction through self-revolution is a key move for the CPC to turn the tide. The 100-year history of the Communist Party of China is a history of self-revolution in which criticism and self-criticism play an important role. In the long-term practice of self-revolution, the basic principles of criticism and self-criticism have become clear:in nature, criticism and self-criticism are ideological struggles within the Party; in terms of content, criticism and self-criticism should point out mistakes and shortcomings in politics, organization and work; in terms of purpose, criticism and self-criticism is to solve ideological contradictions and differences within the Party and achieve unity; in terms of guarantee, criticism and self-criticism cannot be carried out without the fundamental guarantee of inner-party democracy.