The invention provides a bus twisting tool, which comprises a bracket, wherein a front cutting sleeve and a back cutting sleeve which are distributed coaxially in a spaced manner along a forward-backward direction with the axes extending along the forward-backward direction are fixedly arranged on the bracket; the front cutting sleeve and/or the back cutting sleeve are/is detachably assembled together with the bracket; cylindrical twisting main bodies which are used for clamping a bus and twisting the bus in a rotating process are coaxially and rotationally assembled in the inner holes of the two cutting sleeves; positioning clamping grooves for clamping the bus are formed in the outer peripheral faces of the twisting main bodies; two notches, which extend to the front and back end faces of the twisting main bodies along the forward-backward direction, of the positioning clamping grooves are opened; gaps are formed in the sleeve walls of the two cutting sleeves; driving rods for driving twisting main bodies to rotate are convexly arranged on the outer peripheral faces of the twisting main bodies; the driving rods are positioned between the two cutting sleeves and are matched with the two cutting sleeves in a blocking and limiting way in the forward-backward direction. When the bus twisting tool is used for twisting the bus, the bus rotates stably in the twisting process without shaking or being displaced.