The present invention discloses a refrigerator inventory management method using a mobile phone. The inventory management method of the present invention includes updating, at the refrigerator, storage information on items stored in the refrigerator by scanning RF tags attached to the items whenever a door of the refrigerator is opened, transmitting the storage information to a mobile terminal, updating the storage information stored in the mobile terminal with the storage information transmitted from the refrigerator, and displaying, comparatively, the items of the updated storage information and items for the specific list set by a user or registering the items included in the specific list but not in the updated storage information as purchase information. In another aspect if there is a recipe for food preparation available from a website, the mobile terminal registers the items included in the recipe but which are not in the updated storage information as purchase information.