To provide an opportunity of efficient purchase of food by managing an expiration date of the food.

A food case is provided with: a reading part for reading a sticker tag fitted to the food; a tag reader for converting merchandise information read from the reading part to food information for management; and a communication part to be connected with a network, and the food information is registered in the data base of a home server. For an expired food, presence of the expired food is reported to a mobile terminal etc. If a food is close to the expiration date, the presence of the food and the expiration date are given to the mobile terminal etc.