An ice storage device includes an ice storage box. An ice discharging door is provided at an outlet of the ice storage box, and an ice crushing device is provided inside the ice storage box. The ice crushing device includes at least one fixed ice crushing blade and at least one moving ice crushing blade which is provided on a rotating shaft and rotates synchronously to the rotating shaft. The rotating shaft is connected to a driving device. At least one stirrer is provided on the rotating shaft and rotates synchronously to the rotating shaft.