In order to explore the ecological restoration mode of urban river coastal buffer zone,the study analyzes the physical characteristics,biological characteristics,ecological problems and causes of a river coastal buffer zone;explores the application effects of biological restoration technology,physical restoration technology and comprehensive restoration mode.The results show that the comprehensive application of bioreacting can significantly improve water quality,increase biodiversity,increase vegetation coverage,and effectively restore the ecological function of riverfront zone.The results can provide technical support for the ecological restoration of urban riverfront.