The invention discloses an automatic control device for a punching machine production line. The automatic control device for the punching machine production line comprises a bottom plate, a feeding unit, an adjusting unit and a belt conveyor, wherein the belt conveyor is arranged on the front side of the upper surface of the bottom plate, a cleaning unit is arranged at the left end of the upper surface of the belt conveyor, the feeding unit comprises a baffle, fixing plates, a fixing head, a first motor and a laser sensor, wherein two fixing plates are correspondingly arranged on the front side of the upper surface of the belt conveyor, the first motor is arranged on the left side of the fixing plate on the left side, a rotating shaft is connected between two fixing plates in a rotating mode, the left end of the rotating shaft is connected with the output shaft of the first motor, the outer side of the rotating shaft is fixedly connected with one end of a connecting head, the baffle isarranged at the other end of the connecting head, the laser sensor is arranged on the rear side of the upper surface of the belt conveyor, and the laser sensor corresponds to the front and back of the baffle. According to the automatic control device for the punching machine production line, the automation degree is high, the production is safe, and the labor cost is effectively reduced.