Abstract: The report to the Party’s 20th National Congress for the first time put forward the important conclusion that the Party’s self-revolution is always on the way, and discussed for the first time the major proposition of the Party’s self-revolutionary system and standard system. This demonstrates the CPC’s firm determination to comprehensively and strictly govern the Party in the new era, and is a move that lays the foundation for further promoting the great new project of Party building. To explain the above conclusions and propositions from a theoretical perspective is the reflection of the CPC’s political consciousness and confidence in the system, and the need to advance the new great project of comprehensively and strictly governing the Party and Party building. The Party’s self-revolution is always on the way, and its core principles are as follows: First, the goal remains unchanged and the great new project of Party building in the new era remains anchored; Second, continuous improvement, always adhere to innovation and development; Third, there is no limit to the time, and it has been running through the historical process of the great rejuvenation of the Chinese nation.