ObjectivernGeomorphology has played a central role in the study of active orogenic belts.Extensive tectonic deformation associated with the collision of the Indian and Eurasian plates has occurred in the southeastern margin of the Tibetan Plateau, particularly along the Lancang River Orogenic Belt (LROB) and the Lancang River Fault.Therefore, the landscape evolution of the LROB has significant implications for understanding the tectonic process of intracontinental mountain building and plateau growth.In this study, we used digital elevation models (DEMs) to extract longitudinal profile information on the fluvial systems of the central segment of the LROB.The paleolongitudinal profile developed on the low-relief landscape was reconstructed and the data were used to estimate the amount of surface uplift in the central segment of the LROB.The main purpose of this study was to detect the channel response to tectonic deformation in the southeastern Tibetan Plateau.