Abstract: In order to compensate for a lack of strong earthquake records when Code for Seismic Design of the Nuclear Power Plant（GB50267-97） was drafted at that time, the records of strong earthquakes and great earthquakes are chosen as a supplementary for revising the standard response spectrum in GB50267-97. Referring to the way of not distinguishing between the hard field and rock field in RG1.60 and modified RG1.60, the response spectrum of hard field and rock field are integrated, and the suggested corrections of response spectrum are obtained at intermediate frequency and high frequency in GB with the method of probability statistics.