On the background of New Engineering construction and higher education internationalization in China, English for Academic Purposes (EAP) has become a core course to cultivate innovative interdisciplinary talents capable of international academic communication. However, the disjointed arrangement of EAP teaching at undergraduate and postgraduate stages has restricted the continuous improvement of academic English competence. Based on analyzing EAP disciplinary and generic characteristics as well as the structural model of postgraduates’ academic English literacy, this study explores the construction path of integrated undergraduatepostgraduate EAP curriculum and proposes that layered curriculum design, optimized teaching modes, formative evaluation system and digital teaching platform configuration contribute to realizing seamless connection of EAP teaching stages from undergraduate to postgraduate.