Pressure-sensing wine bottle freshness preservation device

The utility model relates to a pressure-sensing wine bottle freshness preservation device. The device comprises a top cover (1) and a bottom cover (2) which are combined in a sealed manner, wherein a sealing opening (3) for encapsulating a wine bottle mouth is formed at the bottom of the bottom cover (2), an extraction valve (4) and a vent hole (5) are arranged at the upper end of the top cover (1), a pressure display screen (6) and a gas inlet button (7) are arranged on the side surface of the bottom cover (2) from top to bottom, the extraction valve (4) and the gas inlet button (7) are both connected with the vent hole (5), an electronic control chip is fixed inside the bottom cover (2) and connected with the pressure display screen (6), and a pressure sensor is arranged in the sealing opening (3) and connected with the electronic control chip. The pressure-sensing wine bottle freshness preservation device has the advantages that through the vacuum extraction device on the equipment, gas in a wine bottle is