An artificial neural network model for simulating the pressure fluctuation in draft tube of water turbine is established. The model can be used as the guide of steady operation of the water turbine. 与实际的测试数据进行对比分析表明,所建立的人工神经网络模型,能够准确反映水轮机的尾水管压力脉动特性,可以用于指导水电站中机组的稳定运行。