The invention provides an automatic labeler, which comprises a label supply apparatus (1), a product loading mechanism (2), a product conveying apparatus (3), a label attaching apparatus (4) and a frame (5), a vertical installing plate (51) is arranged on the frame (5), the product loading mechanism (2) is arranged on the product conveying apparatus (3), the label supply apparatus (1) and the label attaching apparatus (4) are respectively arranged on the installing plate (51) of the frame (5), the product conveying apparatus (3) is arranged on the frame (5), and the labeler also comprises a shooting apparatus (6) and a computer (7), the shooting apparatus (6) and the computer (7) are respectively arranged on the frame (5), and the shooting apparatus (6) is connected to the computer (7). The automatic labeller has the advantages of automatic inspection, automatic scaning, difficult relabeling and leakage, high efficiency and high precision.