In the new era, the people of the CPC, in combination with the Party's historical mission, based on the general requirements of the Party's construction, creatively put forward a series of new ideas and new assertions to strengthen the cultivation of the Party spirit from the perspective of solving the unique problems of the big party, scientifically answered the strategic, overall and directional questions about strengthening the cultivation of the Party spirit, deepened the understanding of the law of strengthening the cultivation of the Party spirit, and improved the theoretical system of strengthening the cultivation of the Party spirit in the new era, He has made important and original contributions to the cultivation of Marxist party spirit. Clarifying the theoretical, historical, and practical logic of strengthening party spirit cultivation in the new era is of great significance for promoting the high-quality development of party spirit cultivation in the new era, adhering to the party's self revolution, and comprehensively and strictly governing the party. Theoretical logic: Strengthening the cultivation of the party spirit is the internal requirement of Marxist classical writers' party spirit theory. Marx and Engels explained the party spirit in the theoretical and political fields, discussed how to maintain the progressiveness and purity of Marxist political parties, and also emphasized that the establishment of proletarian regime should attach importance to education and guide the working class to carry out struggle practice. Lenin applied Marxist party spirit ideology to the specific practice of building the Bolshevik Party in Russia, accumulating rich practical experience and forming a systematic ideology of party spirit cultivation. This also constitutes the theoretical basis for strengthening party spirit cultivation in the new era. Marx and Engels established the basic principles of party spirit. From the perspective of theoretical party spirit, Engels pointed out that without party spirit, ideological theory would lack spiritual strength. "Our party has a great advantage, which is to have a new scientific worldview as the foundation of theory. From the perspective of party spirit, Marx and Engels emphasized that the party spirit of philosophy cannot surpass the original philosophical factions. Philosophy regards the proletariat as its material weapon, and similarly, the proletariat also regards philosophy as its spiritual weapon. From the perspective of the progressiveness and purity of Marxist political parties, Marx and Engels emphasized that the ideological weapons of the proletariat have distinctive party spirit. They should always maintain close contact with the broad proletariat and represent their interests, lead the proletarian movement, and clearly explain the class nature, criticism and militancy of the Communist Party. In addition, Marx and Engels emphasized the importance of organizational discipline in maintaining the combat effectiveness of Marxist political parties, requiring them to be adept at strengthening the Party's style construction and improving the Party's combat effectiveness through criticism and self-criticism. Lenin incorporated the concept of party spirit into the field of party building of proletarian political parties. From the perspective of philosophical party spirit, Lenin proposed that philosophy is an important statement with party spirit, emphasizing that the issue of party spirit and non party spirit is "at least one of the most important issues, if not the most important", and demanding that proletarian political parties should always fight against non party spirit. Lenin explained from the perspective of philosophical party spirit that party members must have a dialectical materialist worldview, absolute obedience to the party, always loyalty to the party, and strict organizational discipline in order to use Marxist philosophy as a "spiritual weapon". From the perspective of political party spirit, Lenin emphasized that party members, as Marxists, must always be "straightforward and open" from the standpoint of the proletariat when dealing with any problem, and adhere to the use of dialectical materialism to analyze and solve problems.