The invention discloses a method for eliminating water diversion system self-induced vibration of a pumped storage power station, and relates to the technical field of water diversion system self-induced vibration elimination. According to the method, when water diversion system self-induced vibration happens to the pumped storage power station, water diversion system self-induced vibration can be automatically eliminated. The detected frequency value of vertical self-induced vibration of introduced water in a water pipe is compared with the frequency value, pre-stored in the storage device, of self-induced vibration eliminated through energy storage and the frequency value, pre-stored in the storage device, of self-induced vibration eliminated through energy discharging, and corresponding introduced water vertical self-induced vibration eliminating work is done according to a comparison result. When self-induced vibration happens to the introduced water in the water pipe, the vertical self-induced vibration of the introduced water in the water pipe can be eliminated through the mode of energy storage eliminating self-induced vibration work, or the vertical self-induced vibration of the introduced water in the water pipe is eliminated through the mode of energy discharging eliminating self-induced vibration work and the mode of energy storage eliminating self-induced vibration work together.