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 silicone, and is subjected to corona discharge treatment after the syringe body (3) is coated with silicone.
