The utility model relates to a glue bucket retreat prevention mechanism and glue bucket replacement device, glue bucket retreat prevention mechanism includes setting the mounting bracket of glue roller way one end and setting the glue bucket baffle of mounting bracket, the glue bucket baffle is rotatedly connected with mounting bracket through fixed pin, and the fixed pin is equipped with
torsion spring with glue bucket baffle, the mounting bracket top surface does not protrude glue roller way, and the glue bucket baffle can rotate to the top surface not protruding mounting bracket when glue bucket is pushed to glue roller way through mounting bracket, rotates to the top surface protruding mounting bracket and glue roller way under the action of
torsion spring when glue bucket leaves mounting bracket. Compared with prior art, the utility model has the advantages such as preventing material scrapping and personnel injury caused by glue bucket backward movement.