Against the strategic background of comprehensively promoting curriculum ideological and political education and implementing cultural confidence, higher vocational English teaching faces practical challenges such as fragmented cultural education content and rigid integration methods. Taking the “Practical English for Higher Vocational Education in the New Era” series textbooks co-edited by the authors as a practical case, this paper systematically elaborates an integration path of cultural confidence centered on “textbook supply-side reform”. The study proposes that through systematic content supply, the textbooks construct a three-dimensional content system with Chinese feelings and an international perspective as the dual-core guidance, organically integrating three major cultural connotations. Through innovative method integration, they practice a “learning by doing” teaching model supported by a task-driven approach, school-enterprise dual cooperation, and multimodal resources. Practice has proved that this reform effectively realizes the in-depth integration of cultural education and language teaching, provides a referenceable textbook paradigm for cultivating high-quality technical and skilled talents needed in the new era, and is a beneficial exploration and positive response to implementing the fundamental task of fostering virtue through education in higher vocational English teaching.