Because a few bytes are utilized to denote the fixed node addresses in wireless sensor network based on Zigbee protocol,there is lack of the fixed addresses for node addresses.In order to realize flexible adjustment and solve insufficiency of node address distributed in wireless sensor networks adapting to the demand of system on chip(SOC),the reconfigurable silicon intellectual property(IP) core for address adjustment in wireless sensor networks is put forward.The mathematic model of the reconfigurable silicon intellectual property core for address adjustment in wireless sensor networks is described.Through module partition technology and hard description language,the IP core is synthesized through electronic design automation(EDA).The simulation result shows that address reconfigurable IP core is fit to(address) adjustment in wireless sensor networks.The IP core offers more meaning to system on single chip (SOC) in wireless sensor networks address adjustment.