A refrigerator includes a storage room, a door for opening and shutting the storage room, and an ice storage unit. The refrigerator also includes a crushing member, which is rotatably provided at the ice storage unit, and a driving unit, which provides rotational power for the crushing member and includes a rotary shaft to be rotated in a first direction. The refrigerator further includes a first power transmission unit, which is coupled with the rotary shaft and is rotated in a second direction, and a second power transmission unit, which is separably coupled with the first power transmission unit and transmits the power of the first power transmission unit to the crushing member.