Abstract After the 921-Earthquake, it is noticed the importance of seismic performance of old buildings. After increasing the seismic performance of old buildings, seismic performance and behavior of structure are discussed in this paper. Base on the capacity spectrum method from ATC-40, NCREE has developed a seismic evaluation method by using pushover analysis. Not only discuss the mechanism of nonlinear hinges but also deliver a reference for modifying the properties of nonlinear hinges. By using the analysis program of nonlinear pushover analysis in ETABS, the results are compared with capacity curve of the experimental results to verify the accuracy of the present study. The purpose of this paper is made the result of simulation to reach the result in-situ pushover test.