Application of statistical energy analysis method to high frequency load identification of structures was proposed.The approach and procedure of the input power identification of subsystems were presented for the structures subjected to multi-excitations.The simulation study using AutoSEA2 software and experimental study on high frequency load identification were respectively conducted for a plate-shell assembled structural system.Both the simulated results and experimental results show that the input power of excited subsystems can be identified accurately in the cases of single excitation and multi-excitations employing the presented identification method.The work presented provides a theoretical reference for high frequency load identification of engineering structures.