Abstract: Xi Jinping's Thought on Party Building is an important component of Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era. It has advanced a series of new ideas, concepts, and strategies for governing, revitalizing, and strengthening the Party, reflecting the practical experience and collective wisdom of the Party and the people. In terms of its ideological origins, Xi Jinping's Thought on Party Building is a theoretical distillation of the Marxist Theory of Party Building. It has been condensed from the historical experience of the Party building over the past century, nourished by the fertile soil of fine traditional Chinese culture, and nurtured in the great practice of governing the Party in the new era. Given its rich connotations, it is necessary to focus on the content system of "the 14 Commitments" in Xi Jinping's Thought on Party Building, clarifying that it centers on the contemporary issue of building a Marxist Party capable of long-term governance, and exploring its theoretical characters of systematic integration, namely the unity of theory and practice, political commitment and scientific rigor, and historical perspective and contemporary relevance, so as to grasp its core essence in a multidimensional, comprehensive, and systematic manner. Xi Jinping's Thought on Party Building has opened a new realm for adapting the Marxist Theory of Party Building to the Chinese context and times, provided the fundamental guidance for strengthening the Party building in the new era, and contributed Chinese wisdom to global political party governance and the political civilization of humanity. It is of great theoretical, practical, and global significance.

Key words: Xi Jinping's Thought on Party Building, 14 Commitments, Party building, to operate the CPC comprehensively under strict discipline, Marxist Theory of Party Building