Ball rolling tool

The utility model provides a ball rolling tool with good global rigidity for leveling metal surface in order to overcome the prior defects. The ball rolling tool comprises a ball (1) and a toolbar (2); one end of the toolbar (6) is provided with a groove (3); the inner side of the ball (1) is in rolling fit with a bearing (5) fixed in the groove (3); the outer side of the ball (1) is provided witha ring washer (2) fixed on the wall of the groove (3); and the outer side of the ball (1) is in sliding fit with the wall of a positioning hole (21) on the ring washer (2). The ball rolling tool is suitable for leveling tool marks on the surface of a part after cutting.