A refrigerator, which prevents a filler unit from being worn away or broken. The refrigerator includes a main body, storage chambers divisionally provided in the main body, a pair of doors opening and closing one of the storage chambers, a filler unit rotatably connected to at least one of the pair of doors to seal a separation space between the doors, a guide member provided on the main body to guide rotation of the filler unit, and a protection unit mounted on the filler unit to rotate the filler unit according to insertion and separation of the protection unit into and from the guide member and to prevent the breakage of the filler unit due to collision with the guide member.