The fire hydrant intelligent monitoring terminal series products are installed on the upper flange of the fire hydrant, and are used for real-time monitoring of the water pressure, water leakage, flow, impact and tilt of the fire hydrant. Through the narrowband Internet of Things (NB-IoT) wireless remote transmission method, the monitoring data is automatically uploaded to the management platform. Through the management platform, it is possible to centrally manage the entire fire hydrant, and to check the real-time monitoring data of the fire hydrant at any time; to accurately and quickly locate and navigate the fire hydrant that has alarmed or malfunctioned, and through the mobile phone APP, it is convenient for the staff to conduct pipeline network inspections, and quickly dispatch orders for maintenance. So as to realize the real "smart firefighting". It can be used for the intelligent transformation of various old fire hydrants on urban roads and used by fire hydrant manufacturers to produce various types of intelligent fire hydrants.