To draw a used iniection needle safely and securely off a syringe main body without touching by hand, by engaging a flange of an injection needle inserting part with a claw mechanism part and moving the claw mechanism part toward the direction of injection needle drawing to draw off to drop and store the needle into a vessel.

A needle vessel 3 is set between leg parts 2c of this injection needle drawer, and a used syringe is set at a needle drawing part 2a so as a syringe main body 51 to be in a horizontal condition. When the syringe 51 is lightly pushed down by a hand, an injection needle inserting part 52 elastically deforms a switch plate 27 downward through the bottom face of an engaging groove to detach the top end part of an adjusting screw 33 on a swelling part from an action element of a microswitch 29 to turn the microswitch on to rotate a motor 16. Then a pin 23 of a worm wheel 22 moves toward the circumferential direction to move a claw 8 together with a claw hook 9 toward the drawing direction to draw a flange of an injection needle 53 is drawn toward the drawing direction.