Using the focal mechanism and slip distribution model of the Taiwan Strait MS7.3 earthquake on Sep.16,1994,we calculated the static coulomb stress change stemming from the earthquake.Based on the distribution of aftershocks and stress field as well as the location of historical earthquake,we researched the coulomb stress change of Taiwan Strait MS7.3 earthquake.The result shows that：static coulomb stress change forward modeling based on slip distribution model is quite consistent with the location of aftershocks in the area that is far away from the epicenter.Ninety percent aftershocks occurred in the stress increased areas.The coulomb stress change is not entirely consistent with the distribution of aftershocks near the epicenter.It follows that coulomb stress change can better reflect the aftershock occurrence far away from epicenter,while such corresponding relationship becomes quite complex near epicenter.Through the calculation,we find that the coulomb stress change in southwest part of Min-Yue（Fujian-Guangdong） coastal fault zone is increased,and this enhances the seismic activity.As it is the intersection area of Min-Yue coastal fault with Shanghang-Dongshan fault,we considered the Nanpeng Island-Dongshan Island surroundings have a high potential seismic risk.[著者文摘]