Abstract: In the new era and on the new journey, the Party Central Committee with Comrade Xi Jinping as the core has always been firm in ideal and belief. It is clearly pointed out that we should adhere to Marxist belief, adhere to the lofty ideal of communism and firmly hold fast to the common ideal of socialism with Chinese characteristics. It is emphasized that this is the political soul of Chinese Communists, the strong foundation of the Communist Party of China, and the spiritual guide for realizing Chinese-style modernization and the great rejuvenation of Chinese nation. At the same time, there is also the highest standard, the fundamental standards, as well as specific standards for testing whether ideal and belief are firm. To this end, we should strengthen Party spirit training, strengthen cultural confidence, and rely on practical actions and responsibilities to consolidate its strategic stability, ideological defense line and practical foundation, so as to lead and inspire the new journey to complete the new mission of further comprehensively deepening reform, and write a new chapter of Chinese-style modernization.