A refrigerator, comprising: a refrigerator body, a door body (21, 22, 23), an air-conditioning membrane assembly and an air pump assembly, wherein the refrigerator body defines a storage space and a compressor chamber therein, a storage container is arranged in the storage space, and a freshness-keeping space is defined inside the storage container; the door body (21,22,23) is arranged on the front surface of the refrigerator body to close the storage space; the air-conditioning membrane assembly is mounted to the storage container, and the surrounding space of the air-conditioning membrane assembly is communicated with the freshness-keeping space, the air-conditioning membrane assembly comprises at least one air-conditioning membrane and an oxygen-rich gas collection chamber, and is configured to allow more oxygen than nitrogen in airflow in a surrounding space of the air-conditioning membrane assembly to pass through the air-conditioning membrane and enter the oxygen-rich gas collection chamber; and the air pump assembly is arranged inside the compressor chamber, and the air pump assembly comprises an air pump, wherein an inlet end of the air pump is communicated with the oxygen-rich gas collection chamber in a controlled manner via a pipeline and a pipeline switching mechanism, for pumping gas in the oxygen-rich gas collection chamber to the outside of the freshness-keeping space, such that the actual content of oxygen in the freshness-keeping space is in a range of 2% to 19%; wherein the storage container is a sealed drawer which defines the freshness-keeping space, the sealed drawer comprising: a drawer cylinder which has a forward opening; and a drawer body slidably mounted in the drawer cylinder, so as to be operatively withdrawn and inserted from and into the drawer cylinder via the forward opening of the drawer cylinder; characterized in that an accommodating chamber which is communicated with the freshness-keeping space is arranged inside a top wall of the drawer cylinder to accommodate the air-conditioning membrane assembly, and in that at least one first vent hole and at least one second vent hole spaced apart from the at least one first vent hole are respectively formed in a wall surface between the accommodating chamber in the top wall of the drawer cylinder and the freshness-keeping space, to communicate the accommodating chamber to the freshness-keeping space at different positions respectively. a refrigerator body, a door body (21, 22, 23), an air-conditioning membrane assembly and an air pump assembly, wherein the refrigerator body defines a storage space and a compressor chamber therein, a storage container is arranged in the storage space, and a freshness-keeping space is defined inside the storage container; the door body (21,22,23) is arranged on the front surface of the refrigerator body to close the storage space; the air-conditioning membrane assembly is mounted to the storage container, and the surrounding space of the air-conditioning membrane assembly is communicated with the freshness-keeping space, the air-conditioning membrane assembly comprises at least one air-conditioning membrane and an oxygen-rich gas collection chamber, and is configured to allow more oxygen than nitrogen in airflow in a surrounding space of the air-conditioning membrane assembly to pass through the air-conditioning membrane and enter the oxygen-rich gas collection chamber; and the air pump assembly is arranged inside the compressor chamber, and the air pump assembly comprises an air pump, wherein an inlet end of the air pump is communicated with the oxygen-rich gas collection chamber in a controlled manner via a pipeline and a pipeline switching mechanism, for pumping gas in the oxygen-rich gas collection chamber to the outside of the freshness-keeping space, such that the actual content of oxygen in the freshness-keeping space is in a range of 2% to 19%; wherein the storage container is a sealed drawer which defines the freshness-keeping space, the sealed drawer comprising: a drawer cylinder which has a forward opening; and a drawer body slidably mounted in the drawer cylinder, so as to be operatively withdrawn and inserted from and into the drawer cylinder via the forward opening of the drawer cylinder; characterized in that a drawer cylinder which has a forward opening; and a drawer body slidably mounted in the drawer cylinder, so as to be operatively withdrawn and inserted from and into the drawer cylinder via the forward opening of the drawer cylinder; characterized in that an accommodating chamber which is communicated with the freshness-keeping space is arranged inside a top wall of the drawer cylinder to accommodate the air-conditioning membrane assembly, and in that at least one first vent hole and at least one second vent hole spaced apart from the at least one first vent hole are respectively formed in a wall surface between the accommodating chamber in the top wall of the drawer cylinder and the freshness-keeping space, to communicate the accommodating chamber to the freshness-keeping space at different positions respectively.