An intraocular lens insertion device comprising: a main body with a lens advancement axis extending therethrough and a rear end; a rod, including on the distal end thereof a lens contact portion that is movable inside the main body in a forward direction along said lens advancement axis for pushing an intraocular lens; an operation portion located away from the rear end of the main body; a plunger that is connected to said rod and to said operation portion and is serving as transmitting portion for transmitting an external force applied to said operation portion to said lens contact portion for pushing the intraocular lens; and an insertion tube, fixed to a forward portion of said main body, from which said intraocular lens is released to an outside after being pushed by said lens contact portion; characterized in that said operation portion includes a first operation portion with a first operation surface and a second operation portion that is connected to said first operating portion by a space-keeping portion such that said second operation portion is separated from said first operation portion by a predetermined distance along the lens advancement axis; and that said intraocular lens insertion device further comprises a restraint portion, provided on the rear end of the main body,, serving as a stop means for temporarily stopping said lens contact portion as said intraocular lens passes through a vicinity of a distal end portion of said insertion tube before said intraocular lens is released from said insertion tube, wherein said restraint portion comprises a restraint surface being orthogonal to the lens advancement axis and is configured to restrain an operator's finger that is pushing said first operation portion in said forward direction at a predetermined position at which said first operation surface is flush with said restraint surface. a main body with a lens advancement axis extending therethrough and a rear end; a rod, including on the distal end thereof a lens contact portion that is movable inside the main body in a forward direction along said lens advancement axis for pushing an intraocular lens; an operation portion located away from the rear end of the main body; a plunger that is connected to said rod and to said operation portion and is serving as transmitting portion for transmitting an external force applied to said operation portion to said lens contact portion for pushing the intraocular lens; and an insertion tube, fixed to a forward portion of said main body, from which said intraocular lens is released to an outside after being pushed by said lens contact portion; characterized in that said operation portion includes a first operation portion with a first operation surface and a second operation portion that is connected to said first operating portion by a space-keeping portion such that said second operation portion is separated from said first operation portion by a predetermined distance along the lens advancement axis; and that said intraocular lens insertion device further comprises a restraint portion, provided on the rear end of the main body,, serving as a stop means for temporarily stopping said lens contact portion as said intraocular lens passes through a vicinity of a distal end portion of said insertion tube before said intraocular lens is released from said insertion tube, wherein