Method for management of food stuff using rf communication network of refrigerator in smart communicator

A food material management method in a refrigerator having a wireless communication network using a portable terminal is provided to enable a user to frequently check the current condition of food stuff kept in the refrigerator indoors and outdoors, while the user can immediately use the checked information as purchase information when necessary. Whenever a door of a refrigerator is opened and closed, RF(Radio Frequency) tags attached to kept food stuff are scanned to update a food stuff memory(501-507). The updated food stuff information is transmitted to a portable terminal(509-513). The terminal updates the food stuff information by new food stuff information received from the refrigerator. Food stuff required by a user is compared with the newly updated food stuff information to display the results, or if the required food stuff does not exist, the results are registered as information for purchasing the food stuff.