Tectonic uplift and climate change influenced the development of river terraces in the eastern Tibetan Plateau. The Yazheku River terraces were studied, showing that as glaciers melted due to warming climate, the river steepened and incised, forming new terraces. The river's incision rate was slower than the uplift rate of the Haizi Shan mountain, leading to the conclusion that the river's incision rate did not exceed the uplift rate.