A stapler unit has a staple section, a cutter section, and a receiving section. A stapling device further includes a staple recovery box which is disposed at a staple discarding position and which recovers the tip ends to be discarded from the receiving section; and a staple discarding mechanism which delivers the tip ends received in the receiving section of the stapler unit to the staple recovery box. One of the plural stapling positions is identical with the staple discarding position.