Abstract: The great Communist Party of China gives birth to the Great Party Building Spirit. As an important theoretical and practical subject, the inheritance and promotion of Great Party Building Spirit in the new era has profound logical necessity:it is the theoretical necessity to demonstrate the advanced nature of Marx's political party. It is the historical necessity for the Chinese Communists to inherit the fine tradition of advocating spirit in the new era; It is a realistic necessity to boost the construction of the "Four Greats" and strive to take the long march of the new era. Inheriting and carrying forward the Great Party Building Spirit in the new era requires the CPC, the people and the youth in the new era to form a strong joint force. Practical requirements are implemented in deepening theoretical research, firmly inheriting self-confidence, innovating publicity carriers, expanding promotion methods, grasping goal orientation and cultivating new people of the times, so as to promote the Great Party Building Spirit to show new vitality in the new era.