Abstract: The pressurizing closure apparatus for a carbonated beverage bottle has a closure plug assembly, a female quick disconnect coupling, and an air pumping unit. The closure plug assembly has a pressure seal plug whose diameter can be increased to seal the neck of a bottle by actuating a cam lever that is pivotally mounted on the top of the closure plug assembly. The one-way valve unit is mounted in the top cap portion of the closure plug assembly and its bottom end is in communication with an air passage tube whose bottom end has an outlet port in the interior of the bottle. The female quick disconnect coupling has its one end connected to the one-way valve unit and it other end connected to the air pumping unit. Actuation of the air pumping unit will introduce air into the sealed bottle to repressurize its interior.