The educational metaverse with the characteristics of virtual and real,online to offline(O2O)integration will greatly expand the space-time boundary of teaching and learning,meanwhile,promote the transformation of teaching concepts and models.This study divides application aspects into four levels of educational metaverse:virtual reproduction,virtual simulation,fusion of virtualization and real reality as well as linkage of virtual reality,besides,analyzes application potential in situational teaching,personalized learning,game-based learning,teacher professional development,furthermore,explor...