Since 2010,the island in the heart of the Irrawaddy River(Yi River)has entered a period of degradation,with receding shorelines and dangerous conditions in the river section crossed by the pipeline.In order to maintain the river stability and eliminate the safety hazards of oil and gas pipelines,membrane bag concrete,permeable ding dam cluster,rigid bank protection,semi-rigid bank protection and simple slope protection have been used for long-term river and bank management.To evaluate the management scheme and effectiveness of the river crossing of Yi River pipeline,this paper combines the evolutionary characteristics of the Yi River section and previous years' management projects,and uses indicators such as the area of the river core island,the degree of erosion and the burial depth of the pipeline to comprehensively evaluate the impact of different stages of management schemes on the safety of the river and pipeline in the crossing section.The results show that the treatment scheme with the core measures of regulating water flow,strengthening bank protection and siltation protection has slowed down the degradation of the river core island and the trend of westward migration of the main river channel,and has effectively ensured the safety of the pipeline during the flood season.The phenomenon of exposed pipe has been gradually eliminated.The experience of Yi River system management can provide a reference for similar projects.