A refrigerator includes a fixed connector fixed to a wall surface of a cooling space; a movable connector detachably coupled to the fixed connector; and a connector protection portion disposed above a coupling surface between the fixed connector and the movable connector, and configured to prevent moisture from being introduced into the coupling surface of the connector from the wall surface of the cooling space. Firstly, the connector protection portion configured to prevent moisture from being introduced into the coupling surface between the fixed connector and the movable connector from the wall surface of the cooling space is disposed above the coupling surface, thereby preventing damage of electric equipment or fire occurrence. Secondly, the coupling surface of the fixed connector is provided towards a front surface or is downwardly inclined towards a front side.