通过对北部湾６．１、６．２级地震的时空分布及地震类型的分析，认为北部湾地震属双主震型序列。６．１级地震的余震序列表现出鲜明的主余震型序列特征，而６．２级地震的余震序列震群型特征较为突出。６．２级地震前，地震序列活动显示出应变释放加速、低ｂ值、加卸载响应比跃升等异常现象。 Based on the analysis of the spatiotemporal distribution and the types of earthquakes in Beibu Gulf 6.1 and 6.2 earthquakes, it is considered that the Beibuwan earthquake belongs to the double main shock series. The aftershock sequence of the 6.1 magnitude earthquake shows a distinctive feature of the main aftershock sequence, while the aftershock sequence of the magnitude 6.2 earthquake group is more prominent. Prior to the M6.2 earthquake, the seismic sequence activities showed anomalies such as accelerated strain release, low b value, and jerky response to loading-unloading response.