Abstract: Hydrological connectivity barriers and physical morphology shrinkage are the main factors restricting Tian′ezhou and Shangchewan oxbow′s role as important translocation protection areas for nationally protected species.Through remote sensing interpretation, the water morphology during dry seasons from1990to2021was extracted annually, and the main shape parameters were identified.Analysis of physical morphology parameters such as shoreline development coefficient(SDI),morphology development coefficient(Φ),and shrinkage coefficient(Rs) were conducted.A morphological parameter sequence eliminating the influence of water area was constructed using the LASSO regression model.The annual variation in morphological parameters were analyzed using the PELT algorithm and segmented fitting method.The gate regulated communication channel can be characterized by the morphological development coefficient, while the natural communication channel can be characterized by the shrinkage coefficient.The process of transformation of Tian′ezhou oxbow lake has basically stagnated after regulation, and the shoreline has gradually tended to become simpler and smoother.With the continuous scouring of the Shangchewan river channel, the process of oxbow lake transformation may gradually accelerate.It is recommended to adopt measures such as waterway dredging, shoreline improvement, sluice gate controlling and regulation to protect the morphology of the oxbow.The research results have guiding significance for the analysis on influence of the Three Gorges Reservoir operation and gate regulation on the physical form of oxbows.