The principle and actualizing steps of nonlinear static procedure for performance-based seismic response （Pushover method） are expatiated, and it is applied to a example of 10 story RC frame structure. The results are compared with those from earthquake response spectrum method, equivalent base shear method and time history method. Its main calculation procedures are summarized by software of ETABS. It is shown that Pushover method can meet different ductility demands of existing structures which are similar to the example in performance-based seismic evaluation.