The roller grinding machine repair and dressing utilizes a structure where the roller bed and the grinding head bed are separated, ensuring the grinding accuracy is unaffected by the roller weight and movement. The roller bed is equipped with components such as the headstock, tailstock, head and tail spindles, while the grinding head bed features a slide plate, abrasive wheel stand, Z-axis drive mechanism for the bed, X-axis drive unit, and C-axis drive unit.