Abstract: A syringe device includes a barrel in which a stopper connected to a plunger is movably received, and an engaging section extends from an end of the barrel. A base member is disengagably received in an engaging section of the barrel and a needle cannula is connected to the base member. The stopper has a protrusion which is engaged with a recess in the base member when the stopper is moved to a extreme position when pushing the plunger. The base member is disengaged from the engaging section and moved into the barrel together with the stopper when the plunger is pulled backward. A pushing device is located between the base member and the stopper to tilt the base member in the barrel.