Driven by digital‑intelligent technologies， the space of ideological and political education in colleges and universities has undergone profound changes. From an interdisciplinary perspective integrating Marxist epistemology with educational ecology， university ideological and political education urgently needs to transform its unidirectional， linear and unit‑based physical space into a multi‑directional， multi‑linear and multi‑faceted three‑dimensional field. By expanding classroom space to integrate in‑class and out‑of‑class scenarios， enabling diverse subjects to co‑exist through university‑external linkage， empowering education with digital‑intelligent technologies to realize online‑offline integration， and building a teacher‑student‑AI interactive community， Beijing Jiaotong University has greatly advanced the three‑dimensional development of the ideological and political education field in the digital‑intelligent era. It has achieved a substantive leap from “knowledge impartation” to “value identification” and further to “behavioral practice”， offering referential experience for relevant reforms.