Abstract: The problem of electromagnetic pollution is becoming more and more serious with the rapid development of the information age. The development of advanced microwave absorbing materials can not only reduce electromagnetic pollution, but also have important implications for military security. MXene is a new type of two-dimensional material. The unique two-dimensional structure, abundant and controllable surface functional groups, high specific surface area, high conductivity and low density make it an ideal high-performance microwave absorbing material. This paper first discussed the preparation methods of MXene and its composite absorbing composites, then introduced the electromagnetic performance of MXene, which is closely related to the absorbing performance. In addition, MXene and its composite microwave absorbing materials are summarized and analyzed according to the loss mechanism. Finally, the development direction of MXene and its composite absorbing materials is prospected from the aspects of type, structure and application.