A refrigerator, comprising: a cabinet in which a cooling chamber located at a lower side and at least one storage compartment located above the cooling chamber are defined, a bottom air inlet and a bottom air outlet being formed in a bottom of the cabinet in a transverse direction at an interval; a compressor chamber arranged behind the cooling chamber, in which a compressor, a heat dissipation fan and a condenser are sequentially arranged; and a divider configured to completely isolate the bottom air inlet from the bottom air outlet to allow external air to enter the compressor chamber via the bottom air inlet located on one transverse side of the divider under the action of the heat dissipation fan, sequentially flow through the condenser and the compressor, and finally flow out from the bottom air outlet (11 0b) located on the other transverse side of the divider, such that the external air entering the condenser and heat dissipation air discharged from the compressor are not crossed, further comprising: a fan fixing frame fixed in the compressor chamber in a front-rear direction and used to fix the heat dissipation fan, wherein the divider is fixed to the fan fixing frame, characterized in that the divider is snap-fixed to the fan fixing frame, wherein the divider has a first separation part, and an accommodating slot is formed in a rear end of the first separation part; a front end of the fan fixing frame extends forwards to form a protrusion; and the protrusion of the fan fixing frame is fitted in the accommodating slot to realize snap fixing between the divider and the fan fixing frame. a cabinet in which a cooling chamber located at a lower side and at least one storage compartment located above the cooling chamber are defined, a bottom air inlet and a bottom air outlet being formed in a bottom of the cabinet in a transverse direction at an interval; a compressor chamber arranged behind the cooling chamber, in which a compressor, a heat dissipation fan and a condenser are sequentially arranged; and a divider configured to completely isolate the bottom air inlet from the bottom air outlet to allow external air to enter the compressor chamber via the bottom air inlet located on one transverse side of the divider under the action of the heat dissipation fan, sequentially flow through the condenser and the compressor, and finally flow out from the bottom air outlet (11 0b) located on the other transverse side of the divider, such that the external air entering the condenser and heat dissipation air discharged from the compressor are not crossed, further comprising: a fan fixing frame fixed in the compressor chamber in a front-rear direction and used to fix the heat dissipation fan, wherein the divider is fixed to the fan fixing frame, characterized in that the divider is snap-fixed to the fan fixing frame, wherein the divider has a first separation part, and an accommodating slot is formed in a rear end of the first separation part; a front end of the fan fixing frame extends forwards to form a protrusion; and the protrusion of the fan fixing frame is fitted in the accommodating slot to realize snap fixing between the divider and the fan fixing frame. a fan fixing frame fixed in the compressor chamber in a front-rear direction and used to fix the heat dissipation fan, wherein the divider is fixed to the fan fixing frame, characterized in that the divider is snap-fixed to the fan fixing frame, wherein the divider has a first separation part, and an accommodating slot is formed in a rear end of the first separation part; a front end of the fan fixing frame extends forwards to form a protrusion; and the protrusion of the fan fixing frame is fitted in the accommodating slot to realize snap fixing between the divider and the fan fixing frame.