Abstract: Self-reform is the essential requirement of a Marxist party, the valuable experience of the Party over the past century, and a hallmark that distinguishes the Party from all other political parties. The Party’s successful exploration of self-reform path has not only enriched and developed the Marxist theory of Party building, but also transcended the old political party civilization of capitalism, that is, “alternation of power between political parties”. In addition, it has made new contributions to the building of world political parties and the political progress of humanity, and opened up a new realm for the development of world political parties.