The invention relates to an automatic label conveying rack. The automatic label conveying rack comprises a supporting bottom plate and a labeling device, wherein the labeling device is mounted at thetop of the supporting bottom plate, and comprises a recovery supporting seat, recovery connecting columns, a recovery top rod, a recovery mechanism, a positioning plate, a separation mechanism, a separation connecting rack, a flattening mechanism, a transition roller, a roller connecting rack, a placement wheel, placement connecting plates, a separation supporting plate, and a supporting plate connecting column; and the flattening mechanism comprises a flattening bracket, flattening pushing rods, a movable flattening rack, a fixed flattening seat, a telescopic flattening piece, a flattening spring, and flattening pushing columns. The automatic label conveying rack provided by the invention has the advantages that difficult problems of the conventional PCB labeling, such as labeling position deviation and label wrinkling during manual PCB labeling, and unavailability for mechanical movement control of a label tape, are solved.