Novel bottle cap for holding carbonated beverage containers

The present invention relates to a bottle cap for a carbonated beverage container. A bottle cap fixing seat is arranged on the bottle body bottle mouth, and the inner layer of the bottle cap fixing seat is hollow, cylindrical, the bottom of the bottle cap fixing seat is closed, the inner layer is provided with a lifting body, and the lifting body is also a hollow, cylindrical, lifting body. The bottom is closed, and there is a limited position slot above the inner layer. The middle of the side wall of the lifting body is provided with a limiting contact ring. The limiting contact ring moves up and down in the limiting slot. The middle of the inner side wall of the bottle cover fixing seat has a beverage outlet. The bottom of the beverage outlet is provided with a window with an elastic film bonded thereto. The side wall of the lifting body is provided with a beverage outlet hole. An air pressure balance air hole is arranged on the bottom surface of the lifting body and the limit contact ring is raised to the upper limit surface of the limit slot. When the beverage outlet and the beverage outflow hole are butted together and the limit contact ring is lowered to the lower limit surface of the limiter tank, the elastic film is stuck to the beverage outflow hole. The invention has the advantages that the carbonated beverage can be well sealed and the drinking can be conveniently opened.