The sliding property at the inner peripheral surface of a syringe body is improved by means of a simple configuration, and smooth and stable slidability can be ensured for a gasket. A syringe (1) is equipped with a synthetic resin syringe body (3) for injecting a liquid (L), a plunger (5) for pushing out the liquid (L) that was injected into the syringe body (3), and a gasket (9) which is attached to the tip (7) of the plunger (8), wherein the inner peripheral surface (14) of the syringe body (3) is coated with a silicone, and is subjected to corona discharge treatment after the syringe body (3) is coated with silicone.
