Abstract: The BeiDou System (BDS) is a Chinese-developed global satellite navigation system that offers advantages such as global coverage, short-message communication, and real-time positioning. In recent years, the BDS has seen some applications in hydraulic engineering safety monitoring. However, it has faced criticisms, including concerns over insufficient precision and unreliable calculation results. This paper reviews the technical characteristics of the BeiDou system, analyzing its applicability, advantages, and limitations within the context of hydraulic engineering safety monitoring. It highlights the potential of the BDS in areas such as emergency communication and surface deformation trend monitoring in hydraulic projects. By enhancing its computational capabilities and integrating multi-sensor data, the BeiDou system can play a crucial role in applications such as the "one map" system, reservoir capacity monitoring, and surface deformation detection in hydraulic engineering safety monitoring scenarios. The paper advocates for further theoretical research and practical application to enhance its role in the safety management of hydraulic infrastructure.