Objectives：It is lack for a long time that to systematically study the sedimentary characteristics during Ordovician—Silurian boundary in Daba Mountains area, which is located between the western Hunan—western Hubei (Xiang—E- xi) Submarine High related to the Yichang uplift and the Michang Mountains area related to the Xixiang uplift. Method: Based on sedimentary and previous Palaeontological research, sedimentary characteristics of the Upper Ordovician Linxiang Formation—the Lower Silurian Longmaxi(Lungmachi) Formation are vertically analysed and laterally correlated with each other in Daba Mountains area in this paper. Conclusions: It is considered that two episodic tectonic—sedimentary response during Late Ordovician—Early Silurian in study area was possible, and timely synchronized to Yichang uplift, the first episode was a main uplift happened during the Linxiang Formation deposition in early Katian stage and spreaded broadly, which is primarily related to continous subduction of Yangtze Plate to North China Block, and the results of migration of foreland uplift towards land side in a passive continental margin basin in the northern margin of the Yangtze Plate. The second episode is a minor uplift occurred during Guanyinqiao (Kuanyinchiao) Member deposition in Hirnantian stage, perhaps includes latest Katian stage and earliest Rhuddanian stage, which is resulted from sealevel drop due to Hirnantian glaciations, and locationally conincided with the first one. However, local uplift at Shennongjia area in east- section of Daba Mountains is the result of interaction between remote effect of the Guangxi (Kwangsian) Orogeny from southeastern margin of the Yangtze Plate and the Yangtze Plate subduction to the North China Block in northern margin of the Yangtze Plate.