Abstract: The application of finite element simulation method of micromechanics in the field of multi-phase materials is promoted by the extensive use of multi-phase materials and the development of computer technology.The application status of finite element simulation of micromechanics in multi-phase materials is introduced.The 2D and 3D finite element calculation methods of micromechanics are summarized.Some major achievements obtained by adopting finite element simulation of micromechanics in the research of composites and steel materials are highlighted.Currently,the application of finite element simulation of micromechanics in the field of multi-phase steels is relatively less,thus the research and development related to it are briefly reviewed and envisaged.