PURPOSE: To provide a pipe push-in device for promoting the amount of operations and stabilizing quality without requiring any experience and at the same time preventing, for example, workers' fatigue or the occurrence of non- welded articles.

CONSTITUTION: A pipe push-in device is provided with a work retention unit B which has a pipe placement pin 31 facing sideways and retains a pipe 53 by setting the pipe 53 to the pipe placement pin 31 and an adhesive supply unit C which has an adhesive supply member 50 which advances and retreats by operating a cylinder and supplies an adhesive S to the outer-periphery surface of the pipe 53 being retained at the work retention unit B from an adhesive application nozzle 50A of the adhesive supply member 50 at the time of advance and retreat. Also, it is provided with a tool unit A which has a work setting part 20 where an outer drum case 51 is set sideways and pushes in the pipe 53 into the crown insertion hole of the outer drum case 51 by reciprocating the work set part 20 toward the side of the work retention unit B by a traveling operation means.