The invention relates to an automatic labeling machine. The automatic labeling machine comprises a rack, a whirling arm, a labeling component, a driving component and a control component, wherein the rotatable whirling arm is arranged on the rack; the labeling component, driving component and control component are connected with the end of the whirling arm, the driving component is connected with the whirling arm in a driving manner, the control component is in signal connection with the driving component; and the labeling component comprises a labeling base and a labeling head, wherein the labeling head is sheathed inside the labeling base, the labeling base is connected with the whirling arm, an elastic piece is arranged between the labeling base and the labeling head, and the labeling head can stretch up and draw down from the labeling base by the elastic piece. According to the invention, labor cost for labeling is saved, production cost is low, maintenance is convenient, and detection is standardized. The label has high accuracy and the labeling time is shortened.