The electrical transmission tower is the main part of large complex lifeline system.Because of the difficulty to make the real time measurement and low precision of the data,the dynamic load inversion by the measured dynamic response becomes an effective way to measure the load indirectly.According to the measured dynamic response of tower-line coupling system in an electrical transmission tower with typhoon Matsa,the inversion of wind load distribution and dynamic tension history of ground wire and conductors are given basing on the inversion method of condensation series multi-freedom model.