A forceps support device 1 is constituted by an endoscope holding portion 20 that holds an endoscope 5, a base portion 30 that holds the endoscope holding portion 20 so as to be rotatable in a circumferential direction of the endoscope, a forceps support portion 50 that supports forceps 40 and is attached relative to the base portion 30 so as to be movable back and forth in an extension direction of the forceps, a first drive means 60 that rotates the endoscope holding portion 20 held by the base portion 30 in the circumferential direction of the endoscope, a second drive means 70 that rotates the forceps support portion 50 and the base portion 30 in the circumferential direction of the endoscope with the endoscope holding portion 20 as a fulcrum, and a third drive means 80 that moves the forceps support portion 50 back and forth in the extension direction of the forceps.