Disclosed are an automatic labeling machine and an automatic labeling machine control method. The automatic labeling machine is used for adhering an identification label on a surface of a test tube. The automatic labeling machine comprises: a tube insertion port (80) used for inserting a test tube; a controller (4) used for determining the type of test tube to be inserted; and a prompting apparatus (3) connected to the controller (4) and used for outputting prompting information corresponding to the type of the test tube to be inserted. The problem of automatic labeling machines easily causing a test tube selection error in the prior art is solved.