Abstract: The characteristics of the main geological structures in the urban area of shijiazhuang were collated and compiled, and the activity of the faults was identified and graded according to the geotechnical engineering standards. According to the characteristics of stratigraphic distribution in Shijiazhuang, the effects of site classification and misclassified site classification on architectural structure design are discussed, as well as problems such as periodic adjustment of response spectrum characteristics, seismic acceleration adjustment, seismic grouping adjustment and fortification intensity adjustment, which are closely related to site classification.