The embodiment of the invention provides a graphene kneecap. The graphene kneecap comprises a kneecap body, a graphene plate and a power supply, wherein the kneecap is provided with the graphene plateat the position corresponding to the knee, and the graphene plate is subjected to hot-pressing sizing to form the semi-spherical shape; the kneecap has the structure that an outer composite layer, the graphene plate and an inner composite layer are connected in a stacking manner; the power supply is connected with the graphene plate; the spherical space of the graphene plate is formed through hot-pressing sizing, then far infrared radiation is gathered to irradiate the knee or one certain fixed area, therefore, the physical therapy effect is enhanced, the pertinence of physical therapy is improved, the long-time physical therapy is available, due to tying belts and buckles, the mounting is convenient, the carrying is easy, no muffling due to binding exists, and the long-time wearing is available; and while the wearing comfort is not influenced, the supply of the power supply is guaranteed.