Discovering the worldwide historical mission of the working class is one of K. Marx's three great discoveries, a central expression for the scientific and revolutionary value of Marxism and also the basis. The most important argument for the socialist-oriented development process in the world and in Vietnam. Since the Declaration of the Communist Party (1848) - the first work shows her casting the historical mission of the working class, the practical operation of the working class, the Communist Party and All progressive humanity has affirmed sustainable values, while providing new data to supplement and develop some of Marx's arguments on this issue.