Since the 18^th National Congress of the Communist Party of China(the CPC), General Secretary Xi Jinping, who has proposed a series of new opinions, new statements and new indications, formulated Xi Jinping’s Important Ideologies on the Self-Reform of the CPC. Xi Jinping’s Important Ideologies on the Self-Reform of the CPC is a rigorous and comprehensive theoretical framework. It defines the connotation of the Party’s self-reform, which contains self-purification, self-improvement, self-renewal and self-enhancement. It intends to make the party maintain the fundamental nature as a Marxist party, maintain the essence of being a public servant who consistently prioritizes the people and maintain a high standard of conduct, thus instructing the reason for the Party’s self-reform. It reveals the basic principles of the Party’s self-reform, including adhering to the unity of ideological construction and institutional governance, the unity of mission orientation and problem orientation, the unity of managing critical minority leaders and managing vast majority members, the unity of exercising power and assuring responsibility, the unity of strict management and sincere caring and trust and the unity of self-supervision and people’s supervision. It elucidates the practical requirements of the Party’s self-reform from the perspectives of organizational support, ideological support, fundamental destination, implementation approach, prioritizing issues, motivation sources and so on. Xi Jinping’s Important Ideologies on the Self-Reform of the CPC is a remarkable and unique theoretical framework. It sets itself apart from unrealistic fantasies and possesses practicality, for it derives from, serves and benefits practice. It answers the major issues raised by the era, utilizes the approach of combining the basic principles of Marxism with the actual situation of China and fine traditional Chinese culture, and summarizes the pattern of party governance in a scientific way. It proposes the concept of the Party’s self-reform, illustrates the essence, the cause, the principle and the requirements of the Party’s self-reform, and incorporates the elements originating from people’s practice, changes in the era and fine traditional Chinese culture, thus promoting the innovation of concept, content and discourse. It inherits the spiritual essence of dialectical materialism and possesses philosophical quality due to its adherence to the principle of the world’s unity in material substance and dialectical movement of contradictions. Xi Jinping’s Important Ideologies on the Self-Reform of the CPC is a meaningful and significant theoretical framework. It offers accurate and comprehensive responses to complex challenges specific to the CPC as a large party, which provides the party with action guidelines of solving problems and remaining strong. It aims to enhance the vitality, explanatory power and persuasiveness of Marxist Theory on Party Construction and then improves its epistemology and methodology system. It focuses on the mechanism of the historical cycle of rise and fall and then finds an approach to escaping the cycle through the combination of Party’s self-reform and people’s supervision. It is able to combine with the conditions of different parties and countries, therefore, it supplies general directs on the comprehension and implementation of self-reform to parties throughout the world.