The utility model relates to the technical field of book printing, in particular to a wild glue prevention device for book printing, which comprises a
water storage barrel, a water pump, a mounting bracket, a spraying
pipe and a spraying head, after a book block and a cover of a glue-coated book are bonded, when the book block and the cover are conveyed on a running track of a rack, a
semiconductor chilling plate is used for refrigerating water in the
water storage barrel, the water pump is started, and the water pump is started; refrigerated water is conveyed to the spraying
pipe through the pipeline, then cold water is sprayed to the spine through the spraying head, and after glue overflowing from the spine makes contact with the cold water, liquid glue is cooled and becomes
solid to be shaped, so that the liquid glue overflowing from the spine cannot be transferred along with the running track, no glue exists on the surface of the spine of the glue-wrapped spine, and the spine of the glue-wrapped spine is not damaged. The book spine is bright and neat, sprayed cold water falls into the
water storage barrel under the action of gravity, circulating spraying is completed, by means of the structure, liquid glue overflowing from the book spine of the glue-coated book can be automatically treated, and therefore the labor cost is saved.