The invention relates to an intelligent urban gas PE pipe network measurement and control system and method. The intelligent urban gas PE pipe network measurement and control system is characterized in that a plurality of measurement and control nodes are arranged on a pipe network between a gas source and a user; each measurement and control node can collect the pipe network gas running pressure, temperature and flow of the corresponding geographic position point of the PE pipe network and send the pipe network gas running pressure, temperature and flow to a master control room server through a wireless local area network and can also receive valve closing control instructions from the master control room server; and the position of each measurement and control node is provided with an intelligent PE valve, wherein the intelligent PE valve is provided with a power storage module, a pipe exterior master control module and a pipe interior wireless collection module. According to the intelligent urban gas PE pipe network measurement and control system and method, the intelligent PE valves are arranged on the pipe network in a segmented manner and are all connected to the master control room server of the urban gas PE pipe network through the wireless network, and through the monitoring analysis and leakage judgment method, real-time monitoring and safety monitoring of integral pipe network running are achieved.