Abstract: The year 2026 marks the 105th anniversary of the founding of the Communist Party of China. At this special juncture, the Party Central Committee has clearly put forward Xi Jinping Thought on Party Building, stressing the need to take the Party’s political building as the overarching guide and uphold institutional governance over the Party and governance of the Party in accordance with regulations. Governance of the Party in accordance with regulations constitutes the core ofXi Jinping Thought on Party Building and holds the key to exercising full and rigorous self-governance over the Party. The intra-Party laws and regulations are a kind of “unique Chinese law”, bearing distinct theoretical characters, and thus the criterion for comprehensively and strictly governing the Party and the most fundamental norms of the intra-Party legal system. The intra-Party legal system is an organic unity based on the Party Constitution and composed of the intra-Party laws and regulations at all levels in various fields. Its governance effect is mainly reflected in three aspects: the rule of law and the rule of virtue, the governance efficiency, the law-abiding obligation and accountability mechanism. The system is the institutional guarantee for the Party’s self-revolution and the code of conduct for the Party. It is thus necessary to transform the advantages of the intra-Party legal system into governance efficiency and strengthen the construction of the intra-Party supervision and the Party’s record review system.

Key words: Xi Jinping Thought on Party Building, institutional governance over the Party, governance of the Party in accordance with intra-Party regulations, intra-Party regulations, governance efficiency