General Secretary Xi Jinping’s important proposition of the “Three Musts” in the report of the 20th National Congress of the Communist Party of China has a rigorous generative logic, scientific content structure, and distinct contemporary value. The theoretical interpretation of the basic principles of Marxism on the nature of the people, practicality, scientificity and revolutionary nature, the profound summary of the historical law of the “two musts” in the history of the Party, and the requirements of the times for the CPC people on the new journey are the generation logic of the “three musts”. The “three musts” are the fundamental driving force, fine style and ability of the CPC to take the new exam.