The question of the international union of the proletariat is an important issue for the international communist movement. Lenin inherited and developed Marx and Engels’ ideas on the international alliance of the proletariat, and expounded the basic ideas of the international alliance of the proletariat on the basis of profoundly analyzing and grasping the new changes and new characteristics of the imperialist era and the national conditions of Russia at that time.Lenin’s idea of international proletarian unity aims to unite the world proletariat and the oppressed nations to promote the world socialist revolution and national liberation movement against imperialism and colonialism, and ultimately to achieve the liberation of all mankind. The communist parties of all countries in the world need to continue to be guided by the Marxist ideology of international proletarian unity, strengthen international cooperation, actively respond to crises and challenges, seek common development, and promote the development of the international communist movement. Against the background of this era, it is of great practical significance to review and discuss Lenin’s idea of the international union of the proletariat.

　　Editor: Zhong Yao  Wei Xiaoxue

　　From:Studies on Marxism.2025.No5.