Fecha de publicación: 09/09/2022 Fuente: WIPO Wine The invention discloses a red wine freshness retaining and discharging system, which belongs to the technical field of red wine freshness retaining and comprises a control unit, an air pump, a wine bottle, an air inlet valve, an air outlet valve and a filter element, the filter element is communicated with the air outlet valve and the air inlet valve, the wine bottle is provided with an air inlet, an air outlet and a wine outlet which are communicated with one another, and the air pump is communicated between the air inlet valve and the air inlet. The control unit controls the air inlet valve to be electrified and controls the air outlet valve not to be electrified, so that the air inlet valve, the air pump, the wine bottle and the air outlet valve are communicated into a closed pipeline; the control unit controls the air inlet valve not to be electrified, and the air pump communicates with the outside and the wine bottle; the filter element can absorb substances causing deterioration of the red wine, is isolated from the outside and filters gas, so that the quality guarantee period of the red wine is prolonged, and the purpose of keeping fresh is achieved; the wine bottle plug has the wine outlet function, the shelf life of red wine is prolonged, the wine bottle plug does not need to be opened every time the wine is drunk, all operations are controlled by the control unit, fresh-keeping wine outlet can be achieved through the key, and convenience and rapidness are achieved.