Special swing cover for beer bottle

The utility model discloses a swing cover special for a beer bottle. The swing cover comprises a beer bottle body, a fixed ring piece, a main movable ring rod, a linkage rod and a swing cover body. According to the swing cap special for the beer bottle, the main movable ring rod is pulled, the main movable ring rod rotates outwards on the fixed ring piece, the main movable ring rod drives one end of the linkage rod to rotate outwards, the external cap body at the top of the main movable ring rod is not limited by the bottle opening any more, the cap body is taken out from the bottle opening, and the abrasion degree of the oxygen inhalation cushion layer is observed; when the bottle stopper is used, the seriously-damaged oxygen inhalation cushion layer in the bottle stopper side groove is taken down, a new oxygen inhalation cushion layer is replaced and adheres to the bottle stopper column body through the adhesion layer, the bottle stopper column body is squeezed towards the interior of the built-in spring, t