Abstract: A pull training device is provided, including a pull grip, a cable having an end connected to the pull grip and a power module connected with the other end of the cable and can pull the cable. The power module includes a power input unit and a power output unit. The power input unit includes a motor and a cylinder combined with the motor in a torsional manner. The power output unit includes a rotating wheel and a winding shaft. The motor is connected to the rotating shaft of the rotating wheel. The cylinder is connected to spokes of the rotating wheel. The winding shaft is coaxial with the rotating shaft. The cable is coiled on the winding shaft. In a rotation circle of the rotating wheel driven by a pull, the torsion formed by the cylinder and motor together changes periodically, so the pull provided for training muscles is not a single source. The pull changes regularly in a circle, thus the muscles are trained a quick contraction and relaxation mode.