On the Unity of the Party’s Class Nature and Extensiveness of Mass Basis

From the special features and historical missions of Chinese working class, the paper expounds and proves that while adhering to the nature of the working class as vanguard, the party must expand its mass basis and take in excellent elements in other social strata according to the profound change of social strata after the opening-up and reform,which is the inevitable requirement of new epoch and progress of history. Then, guided by the world outlook and methodology of dialectical materialism, it comprehensively explains the necessity and possibility of the Unity of the Party’s class nature and extensiveness of mass basis and the great significance, based on the history of the Party and international communist movement.