Abstract: Current developments in educational metaverse both at home and abroad are reviewed, comprehensive analysis is done from 4 dimensions: theory, application, technology, and key issues． Artificial intelligence-driven precision teaching, diversified teaching content, multi-modal knowledge representation, and learning behavior recognition are highlighted． Educational metaverse, by integrating virtual reality, artificial intelligence, and human-computer interaction technologies, provides highly immersive blended teaching experiences, to significantly enhance learning outcomes． However, shortcomings remain in cognitive mechanism research, support for personalized learning, and accuracy of artificial intelligence algorithms． Therefore, addressing critical issues (hardware costs, data and ethical security, technological integration) are important to implement widespread educational metaverse．