A store management system has a merchandise information management apparatus which transmits merchandise information, a merchandise tag which is provided with a first display, and receives the merchandise information which is transmitted from the merchandise information management apparatus to the merchandise tag itself and displays the merchandise information, and a display apparatus for display rack which is provided with a second display, and has a function of receiving the merchandise information which is transmitted from the merchandise information management apparatus to the display apparatus itself and displaying the merchandise information, and checking the merchandise information which is displayed on the display apparatus itself and the merchandise information which is displayed on the merchandise tag by communicating with the merchandise tag.