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本文以地处南流江冲积成因为主的古滨海平原的地貌、松散沉积物及其工程地质特性、场地土、场地类别、场地周期等环境特点为基础，对北海市进行了地震设防区划。将北海市划分为残丘区、台地区和阶地海滩区三个地质地貌单元和相应的三个地震设防分区，每个地震设防区给出相应的地震影响系数。文中还对场地地震地质灾害进行了评估和预测。
In this paper, the seismic fortification zoning of Beihai was carried out on the basis of the environmental features of the landforms, loose sediments and their geological features, site soil, site types and site cycle, which are mainly located in the alluvial deposits of the Nanliu River. The Beihai City is divided into three geomorphological units and three corresponding seismic fortification subdivisions of the three districts in the remnant hill area, the Taiwan area and the terrace beach area, and each seismic fortification area gives the corresponding seismic influence coefficient. The paper also evaluates and predicts the site seismic geological disasters.