A refrigerator , comprising: a main body ; a door rotatably coupled to the main body ; a first ice making compartment configured to generate and store ice, and provided in the main body ; a second ice making compartment provided in the door and configured to crush ice by a crushing device , disposed in the second ice making compartment ; a transfer device configured to transfer the ice in the first ice making compartment to the second ice making compartment ; wherein the refrigerator further comprises: a storage compartment provided in the main body , wherein the door comprises a door body part provided to open and close the storage compartment and a second ice making housing in which the second ice making compartment is disposed; wherein the first ice making compartment containing an ice bucket configured to store the ice is located in a substantially lower portion of the storage compartment ; a dispenser configured for providing ice to the outside is provided in the door body part ; an ice discharge opening configured to discharge the ice of the second ice making compartment to the dispenser is provided in the second ice making housing ; and a rotating blade of the crushing device inclinedly disposed transfers upward the ice from the second ice making compartment , wherein the height of the ice discharge opening is set to be higher than a bottom of the ice bucket . a main body ; a door rotatably coupled to the main body ; a first ice making compartment configured to generate and store ice, and provided in the main body ; a second ice making compartment provided in the door and configured to crush ice by a crushing device , disposed in the second ice making compartment ; a transfer device configured to transfer the ice in the first ice making compartment to the second ice making compartment ; wherein the refrigerator further comprises: a storage compartment provided in the main body , wherein the door comprises a door body part provided to open and close the storage compartment and a second ice making housing in which the second ice making compartment is disposed; wherein the first ice making compartment containing an ice bucket configured to store the ice is located in a substantially lower portion of the storage compartment ; a dispenser configured for providing ice to the outside is provided in the door body part ; an ice discharge opening configured to discharge the ice of the second ice making compartment to the dispenser is provided in the second ice making housing ; and a rotating blade of the crushing device inclinedly disposed transfers upward the ice from the second ice making compartment , wherein the height of the ice discharge opening is set to be higher than a bottom of the ice bucket . a storage compartment provided in the main body , wherein the door comprises a door body part provided to open and close the storage compartment and a second ice making housing in which the second ice making compartment is disposed; wherein the first ice making compartment containing an ice bucket configured to store the ice is located in a substantially lower portion of the storage compartment ; a dispenser configured for providing ice to the outside is provided in the door body part ; an ice discharge opening configured to discharge the ice of the second ice making compartment to the dispenser is provided in the second ice making housing ; and a rotating blade of the crushing device inclinedly disposed transfers upward the ice from the second ice making compartment , wherein the height of the ice discharge opening is set to be higher than a bottom of the ice bucket . <EOS>