A refrigerator, comprising: a refrigerator body in which a refrigerating chamber is defined, a sealed storage space being formed in the refrigerating chamber; an adsorption container disposed in the refrigerating chamber, carbon molecular sieves being disposed in the adsorption container; an air compressor directly connected to the adsorption container through an air inlet pipe and configured to supply compressed air for the adsorption container in a controlled manner so as to allow the carbon molecular sieves to prepare nitrogen by means of the compressed air, the air compressor is disposed in the refrigerating chamber and adjacent to the adsorption container; the air compressor being configured to suck air from the interior of the refrigerating chamber and to compress the sucked air to supply the compressed air to the adsorption container; and a nitrogen storage tank is disposed in the refrigerating chamber and adjacent to the adsorption container and a gas inlet end of which is connected to the adsorption container to receive nitrogen prepared by the carbon molecular sieves and a gas outlet end of which is communicated with the storage space to provide the prepared nitrogen; wherein the air compressor provides the compressed air for the adsorption container at intervals, the adsorption container alternatively performs adsorption and desorption to generate nitrogen at intervals, the generated nitrogen is provided for the nitrogen storage tank, the adsorption container being configured to be communicated with an external environment at a pause time of the air compressor to discharge an oxygen-enriched gas desorbed by the carbon molecular sieves to the external environment. a refrigerator body in which a refrigerating chamber is defined, a sealed storage space being formed in the refrigerating chamber; an adsorption container disposed in the refrigerating chamber, carbon molecular sieves being disposed in the adsorption container; an air compressor directly connected to the adsorption container through an air inlet pipe and configured to supply compressed air for the adsorption container in a controlled manner so as to allow the carbon molecular sieves to prepare nitrogen by means of the compressed air, the air compressor is disposed in the refrigerating chamber and adjacent to the adsorption container; the air compressor being configured to suck air from the interior of the refrigerating chamber and to compress the sucked air to supply the compressed air to the adsorption container; and a nitrogen storage tank is disposed in the refrigerating chamber and adjacent to the adsorption container and a gas inlet end of which is connected to the adsorption container to receive nitrogen prepared by the carbon molecular sieves and a gas outlet end of which is communicated with the storage space to provide the prepared nitrogen; wherein the air compressor provides the compressed air for the adsorption container at intervals, the adsorption container alternatively performs adsorption and desorption to generate nitrogen at intervals, the generated nitrogen is provided for the nitrogen storage tank, the adsorption container being configured to be communicated with an external environment at a pause time of the air compressor to discharge an oxygen-enriched gas desorbed by the carbon molecular sieves to the external environment.