The utility model belongs to the technical field of lubricating of a winding bar vertical mill bearing pedestal, and particularly relates to an air-oil lubrication structure of a vertical mill driving side bearing pedestal. The problems that an existing air-oil lubrication structure of the vertical mill driving side bearing pedestal is not reasonable, so that a bearing can not be cooled and lubricated, and the phenomena of grinding and rolling happen are solved. The air-oil lubrication structure of the vertical mill driving side bearing pedestal comprises a labyrinth ring which is arranged on the driving side of a vertical mill and an oil seal arranged between end caps. The air-oil lubrication structure of the vertical mill driving side bearing pedestal is characterized in that the oil seal is arranged reversely, and an opening of the oil seal faces towards the side of the bearing. The air-oil lubricating structure of the vertical mill driving side bearing pedestal guarantees the fact that oil gas is exhausted upwards, a rolling bearing is enabled to be cooled and lubricated completely, and normal operation of mill equipment is guaranteed.