An air-cooled refrigerator, comprising a freezing chamber, a refrigerating chamber, and an air duct assembly, wherein the air duct assembly is configured to supply air to a compartment, and comprises: an outer cover housing, configured to be fixed to an outer side of a compartment wall defining the compartment, an external accommodating cavity being defined inside the outer cover housing; and an inner cover housing, configured to be disposed opposite to the outer cover housing on an inner side of the compartment wall, an internal accommodating cavity being defined inside the inner cover housing, wherein an air inlet is formed in the outer cover housing, so as to allow external air to enter the external accommodating cavity via the air inlet, a vent is formed in the compartment wall, so that the external accommodating cavity communicates with the internal accommodating cavity, and an air outlet is formed in the inner cover housing, so as to supply the air in the internal accommodating cavity to the inside of the compartment, wherein the compartment is the refrigerating chamber, and the air duct assembly is disposed on the compartment wall positioned at a transverse side portion of the refrigerating chamber; the air-cooled refrigerator further comprises a drying chamber assembly disposed in a lower portion space inside the refrigerating chamber, the drying chamber assembly comprises a drawer body configured to store an object to be stored and having an upward opening, and a drawer upper cover disposed above the drawer body; the drawer body is configured to be pulled out of or pushed into the refrigerating chamber controllably, and the drawer upper cover seals the opening when the drawer body is completely pushed into the refrigerating chamber; an airflow inlet is formed in a back plate of the drawer body and configured to be right aligned with and abut against the air outlet when the drawer body is completely pushed into the refrigerating chamber; and the air inlet is configured to communicate with the freezing chamber controllably, so as to controllably supply a cooling airflow in the freezing chamber to the drying chamber assembly positioned inside the refrigerating chamber via the air duct assembly. an outer cover housing, configured to be fixed to an outer side of a compartment wall defining the compartment, an external accommodating cavity being defined inside the outer cover housing; and an inner cover housing, configured to be disposed opposite to the outer cover housing on an inner side of the compartment wall, an internal accommodating cavity being defined inside the inner cover housing, wherein an air inlet is formed in the outer cover housing, so as to allow external air to enter the external accommodating cavity via the air inlet, a vent is formed in the compartment wall, so that the external accommodating cavity communicates with the internal accommodating cavity, and an air outlet is formed in the inner cover housing, so as to supply the air in the internal accommodating cavity to the inside of the compartment, wherein the compartment is the refrigerating chamber, and the air duct assembly is disposed on the compartment wall positioned at a transverse side portion of the refrigerating chamber; the air-cooled refrigerator further comprises a drying chamber assembly disposed in a lower portion space inside the refrigerating chamber, the drying chamber assembly comprises a drawer body configured to store an object to be stored and having an upward opening, and a drawer upper cover disposed above the drawer body; the drawer body is configured to be pulled out of or pushed into the refrigerating chamber controllably, and the drawer upper cover seals the opening when the drawer body is completely pushed into the refrigerating chamber; an airflow inlet is formed in a back plate of the drawer body and configured to be right aligned with and abut against the air outlet when the drawer body is completely pushed into the refrigerating chamber; and the air inlet is configured to communicate with the freezing chamber controllably, so as to controllably supply a cooling airflow in the freezing chamber to the drying chamber assembly positioned inside the refrigerating chamber via the air duct assembly.