The principle of building the Party ideologically is the most outstanding historical contribution of Gutian Conference. It is a great political advantage and fine tradition of our party building to pay attention to building the party ideologically and be good at using Marxist theory to build and revitalize the party. At present, our country is at a new historical starting point, the world is changing, the situation is developing, and Socialism with Chinese characteristics's practice is deepening. This requires us to keep learning, be good at learning, arm ourselves with scientific theories, have a world vision, be good at grasping laws, be brave in innovation, constantly promote the China, modernization and popularization of Marxism, and persist in arming the whole party with Socialism with Chinese characteristics's theoretical system. Actively practice the socialist core value system, strengthen ideals and beliefs, strive to master and apply all new scientific ideas, new knowledge and new experience, closely integrate with reality, combine learning theory with research to solve the most concerned, direct and realistic interests of the people, combine with research to solve major problems in the reform and development of this department, and combine with research to solve outstanding problems in party building, and reflect the results of learning on the effectiveness of solving practical problems. Only in this way can our party's theory and practice always reflect the times, grasp the regularity and creativity, and better promote China's economic and social development.