An intraocular lens insertion device for inserting an intraocular lens capable of securely and safely pushing out the lens by a simple structure. An intraocular lens insertion device (1) comprises: a main body (3) having a lens placement portion (8) on which the lens (2) with a pair of loop parts (2b) at its optic part (2a) is placed, a transition portion (12) deforming the lens (2), and a nozzle portion (11) discharging the lens (2); and a lens push-out mechanism (4) pushing out the lens (2) placed on the lens placement portion (8). The lens push-out mechanism (4) comprises a plunger (16) pushing out the lens (2) and a slider (15) having a lens contact part (20) larger than the plunger (16). The slider (15) comprises an operating part (23) projected to the outside of the body (3).