社会存在和社会意识的观点及群众史观是唯物史观的本质。邓小平“三个有利于”和江泽民“三个代表”的思想是唯物史观本质在新时期的运用和发展 ,它们有着内在统一的关系 ,都体现了社会存在和社会意识观 ,都树立了人民价值主体思想。共产党人是唯物史观本质的实践者 ,要努力做到“三个代表” The viewpoints of social existence and social awareness and the concept of mass history are the essence of historical materialism. Deng Xiaoping’s thought of “Three Benefits” and Jiang Zemin’s “Three Represents” are the application and development of the nature of historical materialism in the new era. They have an inherent unity and all reflect the social existence and the social consciousness, and they have established the people Value of the main idea. Communists are practitioners of the essence of historical materialism and strive to achieve “three represents”