Generative artifi cial intelligence (GAI) has garnered widespread attention in the fi eld of education due to its userfriendly operation, precise feedback, and strong interactivity. Taking the project "Population Migration in Zhuji Ancient Alley in Nanxiong" as an example, this paper employs the "dual-subject three-stage" framework to analyze the application value of GAI in assisting teaching and learning. It constructs a practical pathway for GAI to empower project-based learning in high school geography, while refl ecting on and summarizing the advantages and limitations of GAI in enhancing project-based learning. The aim is to provide an operational model for the deep integration of GAI and project-based learning.