Abstract: The report of the 20th National Congress of the CPC clearly shows where the CPC's historical confidence lies, and contains it's origin and characteristics.The historical confidence of the CPC is mainly manifested in its confidence in the history of the Party, the history of New China, the history of reform and opening-up, the history of socialist development and the history of the development of the Chinese nation. The CPC's historical confidence comes first from the loftiness of the party's cause and the support of the people. It is inseparable from the scientific cognition and evaluation of history, the profound insight and grasp of historical laws, and the innovative inheritance and promotion of Chinese traditional history and culture. The CPC's historical confidence takes the CPC's party confidence as the essence, and is also the confidence that is unified with the "four self-confidence", connected with the present confidence and future confidence, and combined with the historical sobriety.