In order to meet the theoretical needs of building a proletarian party, Marx and Engels jointly wrote the Communist Manifesto, a programmatic document of Scientific Socialism. In the Communist Manifesto , they clarified the nature and value orientation of the proletarian party, pointed out the main force that the proletarian party should rely on for its construction, and proposed the theory of Class Struggle and Scientific Socialism as the theoretical basis for the construction of the proletarian party. The Party Building Thought of Marx and Engels contained in the Communist Manifesto constitutes the theoretical starting point of Marxist Party Building Theory, and still has important enlightenment value for today’s CPC to strengthen its own construction. To continually promote the new great project of Party building in the new era, we must have firm ideals and beliefs, and constantly arm the whole Party with scientific theories; we must be brave in self-revolution and maintain the progressiveness and purity of the Party; we should put the political construction of the Party in the first place and create a political ecology with a good atmosphere and uprightness within the Party;we should inherit and carry forward the spirit of internationalism and promote the construction of a community with a shared future for mankind; we should formulate correct policies and strategies to promote the liberation and development of productivity. 

　　Editor: Zhong Yao  Liu Tingting 

　　From: Social Sciences of Beijing(Social Sciences) .2024. No.11.