Oil seal cup dismounting tool

The invention discloses an oil seal cup dismounting tool. The tool comprises a control ring, two groups of dismounting assemblies, and two groups of positioning parts arranged on the control ring in aprotruding mode. The two positioning parts are oppositely arranged, one end of each positioning piece is connected with the control ring, and the other end of each positioning piece extends in the horizontal direction away from the center line of the control ring. The two positioning parts each is provided with a group of disassembling component. Each of the disassembling components comprises a sliding block and an inserted part. The sliding blocks are arranged on the upper surfaces of the positioning parts, and the inserted parts are arranged on the side faces, away from the positioning parts, of the sliding blocks in a protruding mode. The inserted parts are used for being inserted into breathing holes of an oil seal cup. The sliding blocks can selectively slide on the positioning partsin the length direction o