Roughening processing method for surface of roller

The invention relates to a roughening processing method for the surface of a roller. The roughening processing method for the surface of the roller comprises the steps that the roller carries out constant-speed rotation around the axis of the roller, laser roughening heads carry out constant-speed motion in the axial direction of the roller, and laser beams are emitted to the surface of the roller in a timed mode to form roughening points on the surface of the roller; the roughening points are distributed on the surface of the roller along large-dip-angle spiral lines by increasing the motion speed, in the axial direction of the roller, of the laser roughening heads, and the thread pitch of the large-dip-angle spiral lines ranges from 10mm to 200mm. According to the roller manufactured through the roughening processing method for the surface of the roller, smooth straight lines do not exist between every two adjacent rows of roughening points on the circumference of the surface of the roller, attachment any l