The present invention provides an artificial joint, including a femur connecting member, a tibia connecting member, and a receiving member, wherein the femur connecting member is connected and fixed with the receiving member and the tibia connecting member via a fixing member unparallel to a joint-twisting axis, and wherein cushion member receives the femur connecting member via a pivot-receiving surface and receives the tibia connecting member via a twist-receiving surface, thereby providing an durable and reliable artificial joint.