The utility model provides a cantilever roll, which comprises a water-cooling roll shaft, wherein the water-cooling roll shaft is provided with a water inlet passage and a water outlet passage, which are used for supplying a loop for the cooling water in the working process of the cantilever roll. The cantilever roll also comprises a roll shaft, roll body blocks and a blind plate choke plug, wherein one end of the roll shaft is connected with the water-cooling roll shaft, and the other end of the roll shaft is connected with the blind plate choke plug. The roll body blocks are arranged on the outer wall of the roll shaft, and the quantity of the roll body blocks is multiple. Each roll body block is arranged in the radial direction of the roll shaft, and a plurality of roll body blocks are distributed on the outer wall of the roll shaft. The roll body block structure is added on the outer wall of the roll shaft, so that the impact resistant capacity and the carrying capacity of the cantilever roll are improved, the impact vibration in the working process can be continuously born, when the cantilever roll is impacted by external force in the working process, an effect for alleviating the impact force through the characteristic that the roll body blocks have large carrying capacity can be realized, and the impact resistant capacity of the cantilever roll can be enhanced. The utility model also provides a stepper heating furnace, and the stepper heating furnace is provided with the cantilever roll.