The refrigerator (1) used by the first user includes a storage room for storing food, a communication unit (23) for performing communication, a photographing device (27) for acquiring images in the storage chamber, and a photographing device (27). The image management unit (101) that extracts a food image from the storage room image acquired by the above, and the food state detection unit (103a) that detects a change in the state of the food stored in the storage room from the food image in a certain period A usage status acquisition unit (104) that acquires first information indicating a usage status of the refrigerator (1) by the first user from a change in the status of the food detected by the food status detection unit (103a); When it is determined from the information that the living situation of the first user is a situation that should be notified to the second user different from the first user, the second information indicating the living situation is obtained through the communication unit (23). Used by user Provided that life management unit for notifying the terminal device (70) and (105).
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