Electronic shelf label system and communicating method using the same

PURPOSE: An electronic shelf label system and a communication method thereof are provided to distribute the communication traffic between a wired/wireless conversion device and an electronic tag, thereby preventing the increase of communication traffic. CONSTITUTION: A wired/wireless conversion device(106) transmits merchandise information on a request of a server. At least one rail(108) is installed on a merchandise display shelf(102). At least one rail comprises a plurality of electric wirings. At least a first electronic tag is installed on the rail, and communicates wirelessly with the wired/wireless conversion device. A plurality of second electronic tags is installed on the rail, respectively, and communicates wired with the first electronic tag through the electric wirings.