Motor torsion detection tool

The utility model discloses a motor torsion detection tool comprising a detection device used for detecting motor torsion. The detection device comprises a fixing mechanism; the magnetic powder brake is connected with one end of the motor to be detected; the tensioner is connected with the magnetic powder brake so as to adjust the load torque applied to the to-be-detected motor by the magnetic powder brake; the controller is electrically connected with the motor to be detected, the magnetic powder brake and the tensioner; the fixing mechanism comprises a fixing seat used for fixing a motor to be detected, and a moving assembly used for moving the fixing seat so that the motor to be detected can be connected with the magnetic powder brake. The moving assembly comprises a lead screw capable of rotating around the central axis of the moving assembly and a flange nut in threaded connection with the lead screw. Moreover, the bottom of the fixing seat is fixedly connected with the flange nut, sliding blocks are arr