A refrigerator comprising: a main body having a storage chamber; a door mounted at the main body so as to open and close the storage chamber; and a sterilization device mounted at an upper surface of the storage chamber in order to sterilize and deodorize an interior of the storage chamber, wherein the sterilization device comprises: a housing formed, at a front surface thereof with an ion outlet while being formed, at a base surface thereof, with an air inlet; a blast unit mounted within the housing so as to suction air within the storage chamber to the air inlet; an ion generating unit mounted between the ion outlet and the blast unit so as to generate ions through supply of the air suctioned by the blast unit; and a guide portion formed at an inner side of the housing so as to guide the air discharged from the blast unit toward the ion generating unit characterized in that the sterilization device is mounted in an attachable and detachable manner, the refrigerator further comprises a seizing portion provided at the upper surface of the storage chamber and a binding portion provided at the housing to allow the seizing portion to be coupled and seized, wherein further the seizing portion and the binding portion are provided so as to be bound by contact therebetween during movement of the sterilization device along an upper wall of the storage chamber, wherein the storage chamber is provided at the upper surface thereof, with a sterilization device mounting portion which is concavely formed upwards as a shape corresponding to the sterilization device, and the sterilization device is attachably mounted at the sterilization device mounting portion. a main body having a storage chamber; a door mounted at the main body so as to open and close the storage chamber; and a sterilization device mounted at an upper surface of the storage chamber in order to sterilize and deodorize an interior of the storage chamber, wherein the sterilization device comprises: a housing formed, at a front surface thereof with an ion outlet while being formed, at a base surface thereof, with an air inlet; a blast unit mounted within the housing so as to suction air within the storage chamber to the air inlet; an ion generating unit mounted between the ion outlet and the blast unit so as to generate ions through supply of the air suctioned by the blast unit; and a guide portion formed at an inner side of the housing so as to guide the air discharged from the blast unit toward the ion generating unit a housing formed, at a front surface thereof with an ion outlet while being formed, at a base surface thereof, with an air inlet; a blast unit mounted within the housing so as to suction air within the storage chamber to the air inlet; an ion generating unit mounted between the ion outlet and the blast unit so as to generate ions through supply of the air suctioned by the blast unit; and a guide portion formed at an inner side of the housing so as to guide the air discharged from the blast unit toward the ion generating unit characterized in that the sterilization device is mounted in an attachable and detachable manner, the refrigerator further comprises a seizing portion provided at the upper surface of the storage chamber and a binding portion provided at the housing to allow the seizing portion to be coupled and seized, wherein further the seizing portion and the binding portion are provided so as to be bound by contact therebetween during movement of the sterilization device along an upper wall of the storage chamber, wherein the storage chamber is provided at the upper surface thereof, with a sterilization device mounting portion which is concavely formed upwards as a shape corresponding to the sterilization device, and the sterilization device is attachably mounted at the sterilization device mounting portion.