The comprehensive development system integrating students, academics and disciplines was clearly put forward by General Secretary Xi Jinping in his important speech at the symposium on philosophy and social sciences, which contains rich connotation as well as feasibility, and accurately defines the new pattern of educating people and cultivating talents in philosophy and social sciences, also, it is a guidance for the development of philosophy and social sciences with Chinese characteristics. The construction of the comprehensive development system of "Integration of Students, Academics and Disciplines" (Three-in-one) of philosophy and social sciences is a complex systematic project. As the main force of philosophy and social sciences and the front for talent cultivation, colleges and universities must take the construction of "Three-in-one" integrated development system as a tool for the implementation of philosophy and social sciences overall development strategy, in addition, centered on students, based on academics and supported by disciplines, and oriented by the primary task of morality establishment and people cultivation, colleges and universities should give full play to the function of talent cultivation in philosophy and social sciences, combine the goals of discipline construction with education objectives to enhance the quality of talent cultivation based on academic innovation. From the theoretical premise, it is necessary to clarify the significance, role, influence as well as the connection of each factor in the system, and to find the main ideas and basic principles for building a comprehensive development system in practice and exploration so as to achieve the maximization and optimization of philosophy and social sciences talent cultivation.