The rainfall monitoring radar is an X-band weather radar capable of monitoring meteorological targets within a 36km range. This radar offers accurate measurements, stable performance, high reliability, and easy operation. It can be integrated with advanced telemetry and remote sensing technologies, such as drop size distribution instruments, to form a high-resolution regional rainfall monitoring application system. It is used for urban flood prevention, reservoir flood control, and watershed water volume monitoring. It can also be used for on-site emergency services by municipal and county-level meteorological and hydrological departments, enabling rapid deployment and operation during sudden events to provide timely on-site meteorological and hydrological decision-making and services.