The utility model discloses a motor rotor guide bar inserting machine, relates to a guide bar inserting machine for carrying out guide bar assembly on a motor rotor, and mainly solves problems that the end parts are enabled to be deformed easily and different in length, the labor intensity is high, the production efficiency is low and batch production is inappropriate to be carried out because the end parts of guide bars are knocked manually in the traditional bar inserting process of the motor rotor guide bars. According to the motor rotor guide bar inserting machine, a workbench and an L-shaped supporting frame are fixed on a machine tool body, the L-shaped supporting frame is connected on a horizontal guide rail on the machine tool body, a sliding block and a tray are respectively installed on guide rails in the vertical direction at two sides of the L-shaped supporting frame, the sliding block and the tray are connected through a steel wire rope, the steel wire rope is connected to fixed pulleys at the upper end and the lower end of the L-shaped supporting frame, the sliding block is connected with a control end of a hydraulic cylinder, the tray is fixedly provided with a pneumatic hammer thereon, and the pneumatic hammer is arranged between the workbench and the L-shaped supporting frame. The motor rotor guide bar inserting machine adopts mechanized operations, and is low in labor intensity, simple and convenient to operate, high in efficiency and applicable to serialized and batch production of motors.