Provided is a composite material capable of measuring bending deformation, the composite material including: a first conductive composite body that is bendable; a dielectric body that is bendable and compressible; and a second conductive composite body that is bendable, wherein the first conductive composite body and the second conductive composite body are respectively stacked on both surfaces of the dielectric body, and heights of the first conductive composite body and the second conductive composite body from the dielectric body are different from each other.