The utility model provides a magnetic core winder actuating system, includes the frame, sets up rotating system and back -and -forth movement system in the frame, and rotating system includes hollow rotation axis, and fixedly connected with synchronizing wheel on the rotation axis outer wall, synchronizing wheel pass through motor drive, and at the preceding tip fixedly connected with ring flangeof rotation axis, the center pin is worn to establish in the rotation axis, and the axle of coiling passes the connection at the front end of center pin from the ring flange, coils between axle and the ring flange through the keydrive, the back -and -forth movement system include the bearing housing, the center pin rear end is passed through the bearing and is rotated and set up in the bearing housing, connecting rod one end articulates on the bearing housing, on the connecting rod other end articulated the nut slider on the lead screw, the lead screw passed through the step motor drive, the step motor electricity is connected to the controller. This actuating system simple structure, mechanical joint element's reduction by a wide margin, equipment life also improve greatly.