Disassembling tool

The utility model discloses a disassembling tool, which is used for tensioning a round hole when a part with the round hole is disassembled, and comprises an inserting piece, a first connecting piece, a second connecting piece, a first connecting piece, a second connecting piece and a second connecting piece, and is characterized in that the inserting piece comprises a first shaft part inserted into the round hole of the part to be disassembled and an abutting part arranged on the first shaft part; the compression spring is arranged around the first shaft part, and the first end of the compression spring abuts against the abutting part; the compression part is movably arranged on the insertion part in the axial direction of the first shaft part and located on the side, away from the abutting part, of the compression spring; the disassembling tool is configured in the mode that when the first shaft part is inserted into a round hole of a part to be disassembled, the compression piece moves from the second end