The utility model provides a ferrophosphorus ring descaling machine supporting roller, includes bearing roller skeleton (1) and inlays dress bearing roller rubber circle (2) on the disc outside the bearing roller skeleton, locating hole (3) of equipartition are offered to disc ring circumference outside the bearing roller skeleton, have positioning plug (4) that correspond with locating hole (3) in the interior disc preparation of bearing roller rubber circle (2), in the positioning plug card income locating hole. The utility model discloses a bearing roller rubber encloses incrust and wearingand tearing, can further improve the life of bearing roller, reduces the fault rate of ferrophosphorus ring descaling machine, guarantees the clearance effect of equipment.