Provided is a refrigerator. The refrigerator includes: a cabinet forming a storage chamber therein and including a cooling module mounting portion, a cabinet sealing portion formed on an outer surface of the cooling module mounting portion; a cooling module detachably mounted to the cooling module mounting portion and including an evaporator, a condenser, and a compressor, wherein the cooling module includes a module housing, and the module housing includes a module sealing portion facing the cabinet sealing portion, and the module sealing portion includes a module inclination portion positioned at an inclination with respect to a direction in which the cooling module is insertable into the cabinet to be mounted to the cabinet; and a sealing member positioned between the cabinet sealing portion and the module sealing portion.