With the development of water resources, hydropower and tourism economy, the study on Qingjiang River has become a hot spot in many disciplines, and the formation and evolution of Qingjiang River were also paid academic attention to. The study on Qingjiang River evolution can contribute to investigate the pathogenesis of geological disaster, and thus provide theoretical support for local disaster prevention and mitigation. Based on analysis of the characteristic double-bottom valleys, and dating of the river terraces in the key locations, series of migration of valley in the downstream of Qingjiang River since late Middle Pleistocene were evaluated. The paper also points out that the slope stability should be discussed based on river evolution.