Method of allocating price of electronic shelf lable tag and system thereof

The present invention relates to a method for allocating price information of an electronic shelf label tag and a system according thereto capable of reducing the load of the system which occurs during a price information changing process. The method for allocating price information of an electronic shelf label tag according to the present invention includes a step in which a portable terminal acquires information of a product; a step in which the portable terminal transmits the product information to an ESL server; a step in which the ESL server transmits price information corresponding to the product information to the portable terminal; a step in which the portable terminal transmits the product information and the price information to an electronic tag; and a step in which the electronic tag displays the product information and the price information.