Intelligent irrigation system is an irrigation system which integrates automatic control technology, sensor technology, communication technology, computer technology and irrigation technology. The system is mainly designed for daily irrigation and management in fields such as farmland, garden and facility agriculture, and achieves the purpose of reducing labor cost, improving automatic production efficiency and saving water resources through modern scientific and technological means. Intelligent irrigation system can improve the level of irrigation management and change the randomness of human operation. Meanwhile, intelligent irrigation can reduce irrigation labor, reduce management costs and significantly improve benefits. Therefore, to promote the implementation of intelligent irrigation, change the widespread extensive irrigation method and improve the utilization rate of irrigation water are the first necessary measures to effectively solve the problem of water saving in irrigation.