A great revolution creates a great spirit. The great founding spirit of the Party runs through the century-old course of the Communist Party of China to actively promote the great social revolution and the great self-revolution, and demonstrates the mainstream nature of the glorious history of the Communist Party of China for a century. From the Red Building of Peking University to the Second National Congress of the Communist Party of China is the initial stage of the Communist Party of China to promote social revolution and self-revolution. While clarifying the goals of social revolution, it also leads social revolution with firm self-revolution, forming a great founding spirit of the Party with historical connotation and distinctive characteristics, which has become the spiritual source of the great revolutionary journey of the Communist Party of China. The Second National Congress of the Communist Party of China is an important historical node for the Party to promote social revolution and self-revolution. Starting from the objective laws of revolution, the Second National Congress actively promotes social revolution to promote self-revolution and injects rich connotations into the great founding spirit of the Party and improves its inner requirements. Therefore, the Second National Congress of the Communist Party of China is not only the starting point for the Party to promote social revolution and insist on self-revolution, but also a key point in the development of the great founding spirit of the Party. A history of the formation of the great founding spirit of the Party is a glorious history of the Communist Party of China leading the people to actively carry out social revolution and strive to realize the great rejuvenation of the Chinese nation, and it is also a history of communists' self-revolution, self-improvement, and continuous spiritual growth. The great founding spirit of the Party shines brightly in the great course of the Communist Party of China leading the social revolution through self-revolution, leading the Communist Party of China and the Chinese people to continuously advance towards realizing the second century goal.