The invention relates to a glue recycling mechanism. The glue recycling mechanism comprises side vertical plates, transmission rollers, a rubber roller, a glue containing disc, a rubber roller motor,a motor support, a glue scraping device and a glue containing disc adjusting device. The glue scraping device is further arranged at the front end of the rubber roller, a glue scraping rod on the gluescraping device is driven by a motor, and due to the fact that the diameter of the glue scraping rod is small, driving is convenient; and after a plastic film is glued, uniform applying treatment canbe effectively conducted on the surface of the plastic film, gluing of the plastic film is more uniform, and the quality is higher. In addition, a longitudinal screw is arranged below the two ends ofthe glue containing disc, meanwhile, a rotation shaft is arranged at the front end of the longitudinal screw, an inner adjusting gear disc is arranged on the rotation shaft and engaged with the longitudinal screw, and accordingly ascending and descending of the glue containing disc can be adjusted through rotation of the rotation shaft; and accordingly, cleaning of the glue containing disc is notlimited by space and becomes easier.