A refrigerator comprising: an ice bucket configured to store ice; a transfer member configured to transfer ice stored in the ice bucket; and an ice crushing device provided at an outer side of the ice bucket and configured to selectively discharge cubed ice discharged from the ice bucket without crushing, or crush the cubed ice and discharge crushed ice, wherein the ice crushing device includes: a housing mounted on an outer surface of the ice bucket; a rotary blade configured to rotate inside the housing; a fixed blade fixed inside the housing to crush ice together with the rotary blade; and a guide member configured to rotate about the same axis as the rotary blade, and guide cubed ice and crushed ice not to be discharged in a state of being mixed, characterized in that the ice bucket includes a first outlet formed on the bottom surface to discharge stored ice, and the housing includes a second outlet to discharge cubed ice or crushed ice, wherein the first outlet is in communication with a first space inside the housing of the ice crushing device, and the second outlet is disposed between the first space and the fixed blade, and wherein the guide member includes: a blocking portion configured to block ice to prevent the cubed ice entering the first space from escaping to the second outlet; and a slit provided in the blocking portion to allow the rotary blade to pass through the blocking portion. an ice bucket configured to store ice; a transfer member configured to transfer ice stored in the ice bucket; and an ice crushing device provided at an outer side of the ice bucket and configured to selectively discharge cubed ice discharged from the ice bucket without crushing, or crush the cubed ice and discharge crushed ice, wherein the ice crushing device includes: a housing mounted on an outer surface of the ice bucket; a rotary blade configured to rotate inside the housing; a fixed blade fixed inside the housing to crush ice together with the rotary blade; and a guide member configured to rotate about the same axis as the rotary blade, and guide cubed ice and crushed ice not to be discharged in a state of being mixed, characterized in that the ice bucket includes a first outlet formed on the bottom surface to discharge stored ice, and the housing includes a second outlet to discharge cubed ice or crushed ice, wherein the first outlet is in communication with a first space inside the housing of the ice crushing device, and the second outlet is disposed between the first space and the fixed blade, and wherein the guide member includes: a blocking portion configured to block ice to prevent the cubed ice entering the first space from escaping to the second outlet; and a slit provided in the blocking portion to allow the rotary blade to pass through the blocking portion. a housing mounted on an outer surface of the ice bucket; a rotary blade configured to rotate inside the housing; a fixed blade fixed inside the housing to crush ice together with the rotary blade; and a guide member configured to rotate about the same axis as the rotary blade, and guide cubed ice and crushed ice not to be discharged in a state of being mixed, characterized in that the ice bucket includes a first outlet formed on the bottom surface to discharge stored ice, and the housing includes a second outlet to discharge cubed ice or crushed ice, wherein the first outlet is in communication with a first space inside the housing of the ice crushing device, and the second outlet is disposed between the first space and the fixed blade, and wherein the guide member includes: a blocking portion configured to block ice to prevent the cubed ice entering the first space from escaping to the second outlet; and a slit provided in the blocking portion to allow the rotary blade to pass through the blocking portion. a blocking portion configured to block ice to prevent the cubed ice entering the first space from escaping to the second outlet; and a slit provided in the blocking portion to allow the rotary blade to pass through the blocking portion.