A refrigerator, comprising: a first fresh-preservation chamber, at least two adsorption towers, a valve, and an air pump; wherein an air inlet of the air pump is in communication with the first fresh-preservation chamber, an air outlet of the air pump is in communication with an air inlet of each of the one or more adsorption towers through an air inlet channel of the valve, and the air inlet of each of the one or more adsorption towers is in communication with the first fresh-preservation chamber through an air outlet channel of the valve; in response to the air inlet channel of the valve being opened, the air pump is configured to pressurize air in the first fresh-preservation chamber, and transmit the air to each of the one or more adsorption towers, each of the one or more adsorption towers is configured to filter out oxygen in the air, the oxygen is discharged from an air outlet of each of the one or more adsorption towers, and residual gas is adsorbed by each of the one or more adsorption towers; and in response to the air inlet channel of the valve being closed, the air pump is configured to stop pressurizing the air and transmitting the air to each of the one or more adsorption towers, the residual gas is released by each of the one or more adsorption towers, and discharged to the first fresh-preservation chamber through the air inlet of each of the one or more adsorption towers and the air outlet channel of the valve, wherein the at least two adsorption towers comprise a first adsorption tower and a second adsorption tower; characterised in that the valve defines a first air inlet channel and a first air outlet channel corresponding to the first adsorption tower, and defines a second air inlet channel and a second air outlet channel corresponding to the second adsorption tower; and the valve is alternately switched between a state that the first air inlet channel is opened while the second air inlet channel of the valve is closed and a state that the first air inlet channel is closed while the second air inlet channel is opened. a first fresh-preservation chamber, at least two adsorption towers, a valve, and an air pump; wherein an air inlet of the air pump is in communication with the first fresh-preservation chamber, an air outlet of the air pump is in communication with an air inlet of each of the one or more adsorption towers through an air inlet channel of the valve, and the air inlet of each of the one or more adsorption towers is in communication with the first fresh-preservation chamber through an air outlet channel of the valve; in response to the air inlet channel of the valve being opened, the air pump is configured to pressurize air in the first fresh-preservation chamber, and transmit the air to each of the one or more adsorption towers, each of the one or more adsorption towers is configured to filter out oxygen in the air, the oxygen is discharged from an air outlet of each of the one or more adsorption towers, and residual gas is adsorbed by each of the one or more adsorption towers; and in response to the air inlet channel of the valve being closed, the air pump is configured to stop pressurizing the air and transmitting the air to each of the one or more adsorption towers, the residual gas is released by each of the one or more adsorption towers, and discharged to the first fresh-preservation chamber through the air inlet of each of the one or more adsorption towers and the air outlet channel of the valve, wherein the at least two adsorption towers comprise a first adsorption tower and a second adsorption tower; characterised in that the valve defines a first air inlet channel and a first air outlet channel corresponding to the first adsorption tower, and defines a second air inlet channel and a second air outlet channel corresponding to the second adsorption tower; and the valve is alternately switched between a state that the first air inlet channel is opened while the second air inlet channel of the valve is closed and a state that the first air inlet channel is closed while the second air inlet channel is opened.