Provided is a syringe which can be firmly gripped and makes it possible to stably administer a liquid drug to a drug recipient, even when a strong plunger pressing force is required, and which is intended for gripping and use by a drug administrator. This syringe (1) has a syringe cylinder (10) equipped with: a syringe cylinder body (40) having a trunk section (44) between a liquid-drug discharge part (41) to which a cap (21) is attached and an insertion port section (46) which opens on the base-end side; and an outer cylinder (30) for supporting the syringe cylinder body (40) by engaging a syringe cylinder flange (45), having a cylinder tip part (31) opening on the tip side and an opening (39) opening on the base end, and having a finger placement part (37a) extending in one direction from the outer circumferential surface, and a gripping part (33) which can be gripped with a finger. The syringe (1) also has a plunger (50) having a shaft section (51) into which the syringe cylinder (10) is inserted from the opening (39), and a pressing part (53) positioned on the base end thereof. This syringe stores a liquid drug (100) in the trunk section (44), seals the liquid drug (100) therein in a liquid-tight manner by insertion of a gasket (43), and is suitable for use as a prefilled syringe (1).La présente invention se rapporte à une seringue qui peut être saisie avec fermeté et qui permet d'administrer un médicament liquide avec stabilité, même lorsqu'une grande force de pression sur le piston est nécessaire. Ladite seringue est destinée à être saisie et utilisée par la personne administrant le médicament. La seringue (1) selon l'invention comprend un cylindre (10) équipé des éléments suivants : un corps de cylindre (40) comportant un tronc (44) situé entre une section libérant le médicament liquide (41) recouverte d'un bouchon (21), et un orifice d'insertion (46) qui s'ouvre sur le côté de l'extrémité de base ; et un cylindre externe (30) sur lequel repose le corps du cy