This article uses the ANSYS finite element analysis.The frame structures under earthquake action in accordance with the seismic spectral response are analyzed.With a 10 layer of steel frame structure as an example the modal solving spectral response analysis,modal expansion,modal mergers and schedule analysis of the simulation.The results show that the modal analysis to obtain the natural frequencies and mode shapes of the steel frame.The vibration period of the structure is away from main vibration cycle at the design stage and earthquake spectral response curve and response modal spectral response analysis.Consider the combination of the two can found that the vibration and resonance frequency.All above can avoid the steel frame structure during an earthquake due to damage as a result of the resonance.