The invention discloses an automatic fruit labeler. The automatic fruit labeler is characterized by mainly comprising a labeling head assembly 1, a transmission case assembly 2, a label sucking paper tube assembly 3, a labeler handle 4, a labeler fixed hinge 5, a frame 6, a main motor 7, a toothed driving belt 8, label bottom paper 9, a rotary labeling head 10, stretching air bags 11, fruit 12, etc., wherein the labeling head assembly 1 is connected with the transmission case assembly 2, the label sucking paper tube assembly 3 is connected with the transmission case assembly 2, the labeler handle 4 is fixedly mounted on the frame 6, connection of the labelers is realized through the labeler fixed hinge 5, the main motor 7 drives the toothed driving belt 8 to rotate, and the labeling head is equipped with a plurality of the telescopic pneumatic air bags 11. The automatic fruit labeler provided by the invention has the advantages of simple structure, low production cost, high efficiency, capacity of ensuring production quality, convenience and practicality.