Abstract: Residual heat removal system is an important safety concerning system in PWR,and the detailed seismic analysis need to be performed for the major equipments in this system.For the residual heat removal heat exchanger in residual heat removal system,solid element and shell element was used for the model,multi-point spectral analysis was used for detailed stress analysis,and RCC-M code for results assessment,which showed that the method above is convenient and reasonable for analyzing the residual heat removal heat exchanger,and it can reduce the calculation time.