Abstract: The Socialist Theoretical System with Chinese Characteristics is a complete and scientific theoretical system,which is distinctively practical and scientific,with the features of integrity,innovation,openness and concerns for the people.Constructing the Socialist Theoretical System with Chinese Characteristics is the internal requirement of its own development,the realistic need of consolidating Marxist guiding position in the ideological field,the essence requirement of arming the whole party and educating people.We need to expand the construction of the idea about this Theoretical System from the whole perspective,and construct a more mature and scientific theoretical system with complete structure,rigorous logic and more openness.