The utility model discloses an electric power safety pay -off, including wire, base, the bottom of base sets up movable supporting plate, movable supporting plate's top sets up a guide pulley, the 2nd guide pulley, form line channel between a guide pulley and the 2nd guide pulley, set up the wire pay off rack in the base, the top of base sets up host computer, motor and support, set up control button and drive wheel on the motor, set up the 3rd guide pulley on the support, set up the first driving wheel of following on the 3rd guide pulley, it is first from the driving wheel through first hold -in range and drive wheel linkage, the wire is located the wire pay off rack, the one end of wire is walked around the 3rd guide pulley and is passed line channel. The utility model has the advantages of convenient to use, crossing that the line position is smooth wear -resisting, reduce friction, can not knoing, twine, safe and reliable reduces the amount of labour, shortens the line time of receiving and releasing, improves unwrapping wire efficiency.