Abstract: The present invention relates to a product information management device. The product information management device, according to one embodiment of the present invention, comprises: a legacy interface unit for receiving, from a web server, product information to be displayed on electronic labels corresponding to respective products to be displayed on shelves; an information management unit for generating layout information for arranging the product information on the electronic labels, and image information to be displayed on the electronic labels together with the product information; and a communication unit for transmitting, to the electronic labels, the product information, the layout information, and the image information through a gateway module by multiple frequency channels, and updating the product information through a wake up command when the electronic labels are in a sleep mode.