The issue of electromagnetic wave pollution is increasingly severe due to the rapid advancement of communication technology. Advanced electromagnetic wave absorbing materials have become an important research field. The excellent microwave absorption capabilities of the MXene composite can be attributed to its unique two-dimensional structure, abundant adjustable surfaces with functional groups, significant specific surface area, and high electrical conductivity. In this paper, the electromagnetic properties, electromagnetic wave absorption advantages and electromagnetic wave absorption principles of MXene compared with other materials are reviewed, and the wave absorption properties of MXene/graphene, MXene/carbon nanotubes, MXene/polymer, MXene/metal particles and MXene/oxide composites are summarized and analyzed. It is being investigated what the future holds for MXene and its mixed absorbent materials.