Abstract: This article systematically analyzed the causes of the shoreline collapse of Qixingzhou on the right bank of Qigongling bend in the middle reaches of Changjiang River, including the binary characteristics of the riverbank soil structure, poor stability, and overall weak resistance to erosion. Affected by the adjustment of upstream and downstream river conditions, the deep channel is close to the shore, facing the top of the flow, and the coastline continues to collapse and retreat. Due to the influence of special water conditions, a major flood occurred in Changjiang River Basin in 2020. After the peak of the flood, the intensity of bank collapse far exceeded the usual level. Since 2024, the flow has sharply changed from high to low, and the scouring effect on the bank slope has significantly increased after the flow returns to the trough, exacerbating the bank collapse again. On this basis, a preliminary monitoring and warning system for shoreline collapse was constructed, which significantly improved the timeliness of shoreline monitoring and warning. The research results have enriched the refined analysis and early warning prevention methods for river bank collapse disasters, and have practical value for improving the ability of bank collapse disaster early warning and risk prevention. It can provide technical reference for the prevention and control of bank collapse disasters in the middle and lower reaches of Changjiang River.