Bottle opening sealing device

The utility model discloses a bottle opening sealing device which comprises a bottle body, a sealing bottle cap assembly is arranged on the top of the bottle body, a top cover, a film pressing block and a connecting block are sequentially clamped on the sealing bottle cap assembly, and an abutting ring is arranged in the middle of the interior of the top cover to be connected with the film pressing block in a clamped mode. A sliding mechanism is arranged on the outer wall, close to the bottom, of the film pressing block so as to be clamped to the inner wall of the connecting block, and the abutting ring is assembled to be used for keeping rotating so as to drive the film pressing block to move in the vertical direction along the sliding mechanism. According to the bottle opening sealing device, the inclined sliding block and the sliding rail are connected in a sliding and clamping mode, when the top cover rotates, the abutting ring drives the film pressing block to rotate synchronously, the film pressing bloc