The “big landmark”, “big plan” and “big revitalization” are important physical objects, actual existence and evidence resources for ideological and political education. The “big ideology and politics class” is the rightful meaning of integrating the great change of the new era into ideological and political education, the practical need to promote the connotative construction of the “big ideology and politics class”, and the epochal need to cultivate architectural talents with all-round development of morality, intelligence, physicality, aesthetics and labor. Through in-depth excavation of the ideological and political education elements contained in “big landmark”, “big plan” and “big revitalization”, we clarify the practical approach to construct a social classroom with architectural characteristics. In the three dimensions of knowledge, faith and action, we provide students with a “big ideological and political class” with a sense of the times, a sense of participation and a sense of acquisition. Adhering to systematic thinking, in-depth promotion of synergistic linkage between the social field and the school field, the real space and the cyberspace, the virtual space, the teacher"s dominance and the student"s subjectivity, and the promotion of the organic articulation between the small classroom of ideology and politics and the big classroom of the society, so as to maximize the efficacy of nurturing with the optimized operation of the ideological and political education system.