The utility model relates to a novel hearth roll of a high-temperature heating furnace of a finishing machine unit, which overcomes the defects that the prior hearth roll is very easy to seriously bend and deform, has short service cycle, and the like. The technical scheme is as follows: the novel hearth roll of a finishing machine unit consists of a middle roller and shaft heads arranged at two ends of the middle roller, and is characterized in that the middle roller 1 is internally provided with at least three radial supports 3 and at least one axial support 4 connected with the radial supports 3; and holes 5 matched with the axial support 4 are disposed on the radial supports 3. Compared with the prior art, the utility model is not easy to deform under the high temperature condition, has long life cycle which is three times of that of the original hearth roll, improves the work efficiency, reduces the maintenance quantity and lowers the production cost.