Electronic Shelf Label (ESL) is an electronic display device that can be placed on shelves and replace traditional paper price tags. It can display the name, place of origin, price, and other forms of expression of the product to customers, including text and QR codes. Each electronic price tag (ESL) is connected to the mall's calculation database through a wireless network and displays the latest product prices on the screen of the ESL. Electronic price tags (ESL) have effectively incorporated shelves into computer programs, eliminating the need for manual replacement of price tags and achieving price consistency between online and offline channels.