Abstract: The phenomenon of discharge atomization occurs as hydraulic structures discharging,affecting the safety of power stations,electrical equipment and producing environmental pollution.In this study,the means of large scale model is used to study the discharge atomization problem for Xiangjiaba power station.The feedback analysis is carried out for the model law of atomization using the field measured data of Wantang power station similar to that of Xiangjiaba power station on the side of energy dissipation.Atomization intensities and canes of Xiangjiaba power station is forecasted.