The hydropower station is coupling field of the vibration of water turbine generator set and power house, which shows the superimposed and coupled signals of multiple vibration sources. In this paper, the time-delayed transfer entropy is proposed to identify the transport directionality and path of the vibration information. Firstly, the identifying method for the information transfer in hydropower station based on the transfer entropy is studied by a simulated model. Next, with the field experiments, the actual paths of different vibration sources are identified and analyzed. The paper presents a new time-field identifying method and findings for the study of vibration regularity, location and inherence in the hydropower station.