In his new book Historical Materialism and Marx Economics, Professor Meng Jie has regulated the relationship of mode of production, production relations and productivity. He put forward the theory of organic change of the production mode, reexplained the concept of historical causality. He also proposed that the class struggle and the role of the state as the direct driving force of institutional change, which has improved the theory of historical materialism. This improvement provides a theoretical basis for the understanding of the establishment of Chinas socialist mode of production, as well as the transformation of the socialist economic model.