In order to cultivate talents more effectively in construction engineering and cultivate students’ critical thinking, creative thinking, high-level thinking, as well as students’ perseverance, learning ability, global competence, and responsibility, combined with the integrated stem education concept, this paper makes an in-depth study on the online teaching model of construction engineering course in PLS-SEM mode. This paper mainly discusses how to apply stem education concept in architectural engineering teaching through literature analysis and the design of architectural engineering teaching cases. Take the integrated stem education concept as the guiding ideology, design research as the methodological guidance, and learn from the research model of design research in the field of curriculum and teaching “formative research.” After the prototype of the teaching mode is put forward, with three rounds of iterative implementation and revision, a feasible and effective mathematics teaching mode in Engineering Higher Vocational Colleges under the concept of stem education (hereinafter referred to as “stem-HVE teaching mode”) is finally obtained. It provides a new way for engineering teaching and opens a new chapter of integrated stem education in the field of engineering teaching.