The dialogical field represents the relational structure of integrating temporal and spatial dimensions in educational dialogue. In the context of higher education ideological and political theory courses, the dialogical field merges virtual and physical temporal-spatial landscapes, but faces problems such as narrowness, generalization, separation between subjects, and imbalance of focus. To address these issues, it is essential to empower the teaching process through digital technologies to expand the dialogical field, define the scope of multimedia technology applications based on real human needs, construct a human-machine collaborative interaction chain to foster a shared learning environment, and optimize the organization and presentation of teaching resources on digital platforms. In this way, we can maintain the centrality of content, establish a panoramic and optimal dialogical field, and promote the effectiveness enhancement and information model transformation of ideological and political theory courses in higher education.