Abstract: Satellite remote sensing monitoring has advantages in compensating for insufficient ground measurements, comprehensively understanding behavior changes in water conservancy projects and identifying risk sources. This paper examines optical and radar remote sensing monitoring technologies, outlining their current application in water conservancy projects. It highlights challenges in image classification, recognition, InSAR deformation measurement, and their integration with risk assessment. In response to the application requirements for the construction progress and operation management of projects, the business application path of remote sensing monitoring for water conservancy projects is discussed from three typical application scenarios: progress supervision of projects under construction, precise deformation monitoring of operational projects, and risk identification and early warning. It analyzes technical bottlenecks, such as quantification, spatiotemporal resolution, and multi-scale collaborative monitoring. Finally, it outlines future trend in remote sensing monitoring technology for water conservancy projects.