The shaking table test of intact ancient timber structures （without considering looseness） is carried out to evaluation the seismic performance of damaged ancient timber structures， and the failure characteristics， modal parameters and dynamic response curves are obtained. The finite element models （FEM） of intact and damaged structures are established by using OpenSees and the modal parameters and dynamic response curves of intact FEM and test model are compared. Taking the ground peak acceleration （PGA） and maximum inter story drift as the ground motion intensity index and response parameters， the incremental dynamic anal?ysis （IDA） of damaged models are conducted. Through the seismic probability demand analysis of each model， the seismic vulnerability of damaged models is studied. The results show that the error of modal parameters between the intact FEMs and test model is less than 10%， and the dynamic time history response curves are basically consistent， which shows the rationality and correctness of the FEMs. The determination coefficient of the damage model is between 0.83578 ~ 0.85761， indicating that the linear regression function has a high correlation with the data points. When the joint damage degree reaches 13.3%， the damaged structure does not meet the requirements of existing codes for structural seismic fortification， and it must be strengthened and repaired immediately.