Dynamic LCD price tag parameter configuration system and method under wireless local area network

The invention discloses a parameter configuration system and method for a dynamic LCD price tag under a wireless local area network, and the system comprises an operation and maintenance terminal which is used for obtaining an interface of a server, receiving the parameter configuration of the dynamic LCD price tag, obtaining a parameter configuration file, and transmitting the parameter configuration file to the server; the server is used for triggering an issuing command after receiving the parameter configuration file and issuing the parameter configuration file to the wireless AP; the wireless AP is used for receiving the parameter configuration file; sending a discovery broadcast packet according to a preset period; after a discovery response packet of the dynamic LCD price tag is received, a configuration parameter packet is generated, MD5 marks of the configuration parameter packet in the response packet are detected, and if the MD5 marks are different, the newly generated configuration parameter packe