本文在实际调查基础上,结合大地构造、物理场特点,地貌及地震活动等方面的分析,论证了长江断裂带东段的存在,指出了这段断裂带位于江苏省江阴、沙洲、南通境内,经由江阴黄山、沙洲巫山至南通五山、吕泗一线以北进入黄海。这为进一步深入研究长江下游地区大地构造和地震地质打下了基础。 Based on the actual survey and the analysis of the geotectonic, physical characteristics, geomorphology and seismicity, the paper proves the existence of the eastern segment of the Yangtze River fault zone. It is pointed out that this fault zone is located in Jiangyin, Shazhou and Nantong in Jiangsu Province. From Jiangyin Huangshan, Shazhou Wushan to Nantong Wushan, Lu Si first line north of the Yellow Sea. This laid the foundation for further study on the geotectonics and earthquakes in the lower reaches of the Yangtze River.