Abstract: Mo-containing catalysts for liquid phase epoxidation of olefins are reviewed，including Mo complexes，heterogenized Mo complexes and MoO₃-based solid catalysts. All these catalysts are very effective when using organic peroxide as single-oxygen donor. In case of Mo complexes，the catalytic performance is significantly affected by the ligands，and moreover，asymmetric epoxidation can be realized by the introduction of chiral ligands. For MoO₃-based solid catalysts，the catalytic properties have strong relations with surface molybdenum species. While in case of using H₂O₂ as oxygen donor，most of the reported Mo-containing catalysts are inactive. Therefore，it is a valuable field to develop Mo-containing catalyst that can activate H₂O₂ for the epoxidation of olefins.