Abstract: Attaching importance to propaganda work is the fine tradition and prominent advantage of the Communist Party of China. In order to promote the building of the Party and the Red Army, unite the people to “fight against Japan and Chiang Kai shek”, and spread the image of the Party to the outside world, the Communist Party of China carried out extensive propaganda work during the Long March, with the theme of Marxist theoretical system, revolutionary thought with Chinese characteristics, the Party’s line, principles and policies, and major events within the Party and the military, setting up the propaganda network, distinguishing different objects, adopting a comprehensive mode, and building a multi field to comprehensively promote the propaganda work, achieving good pcblicity results. The propaganda work of the Communist Party of China during the Long March always adhered to the leadership of the Party, implemented the mass line, served practical needs, and innovated working methods, providing a historical mirror for the Party’s propaganda work in the new era.