Abstract: Aiming at the problems of low utilization rate of water resources and poor uniformity of traditional irrigation methods, the uniformity of farmland irrigation system based on network analysis method was designed and studied. The system was constituted of perception layer, transmission layer and application layer. The intelligent predictive control algorithm of irrigation system according to the theory of network analysis was designed. To achieve the purpose of accurate irrigation and better irrigation uniformity, the BP neural network and irrigation prediction model of irrigation system was designed. To verify the effectiveness of irrigation system, the irrigation uniformity test was carried out. The test results show that the irrigation system could achieve uniform irrigation and reduce water consumption.