The invention discloses a steel wire production line feeding machining device. The steel wire production line feeding machining device comprises a finished product lifting device comprises finished product lifting device lifting sleeves, a bevel gear set, a driving motor, finished product lifting device lifting rods, a radius conversion device lower mounting plate, radius conversion device inner supporting rods, a radius conversion device hinging welding table, a winding barrel, a steel wire, a steel wire feeding hole, a steel wire up-down feeding rod, a steel wire feeding device crank, a steel wire feeding device connecting rod and a lifting hydraulic cylinder. According to the steel wire production line feeding machining device, the motor transmits power to a up-down feeding device and the winding barrel through a transmission device composed of three bevel gears to achieve rotary winding of the winding barrel, radius conversion of the winding barrel is achieved through lifting of ahydraulic rod, and after winding is completed, a wound steel wire coil can be conveniently taken down through radius conversion of the winding barrel, a finished product is lifted and sent out of thewinding barrel through a finished product lifting device, the other bevel gear drives the up-down feeding device to achieve up-down moving feeding of the steel wire on one side of the winding barrel,and then the steel wire is evenly wound on the winding barrel.