从构造单元、活动断裂、地球物理场、海底地形等方面分析了１９９４年９月１６日台湾海峡７．３级地震发生的构造环境。研究认为，地震发生在陆壳向过渡壳变化的位置上。历史上地震活动沿深部构造变异带分布，该区地质构造、震源深度、地震类型、地震波特性等都有别于海峡中、北部，具有南海系的特征。震前地震活动空间图象揭示了地震是南海系北缘断裂活动的结果 The tectonic setting of the 7.3 magnitude Taiwan Strait earthquake on September 16, 1994 is analyzed from the aspects of tectonic units, active faults, geophysical fields and seafloor topography. According to the study, the earthquake occurred at the position where the continental crust changed to the transitional shell. In the history, the seismic activity is distributed along the deep structure variation zone. The geological structure, focal depth, seismic type and seismic wave characteristics in this area are different from those in the middle and the north of the strait and have the characteristics of the South China Sea. The seismic image before the earthquake revealed that the earthquake was the result of the fault activity on the northern margin of the South China Sea