The "Intelligent Monitoring and Early Warning Integrated Linkage System for Urban Waterway Sections" can be placed in the center of the gantry of urban roads to detect the waterway conditions in real time by constructing a physical model to display the system principle. The model adopts OLED high-definition display screen and can display three-level warning information in real time according to the water level depth. In case of severe waterway, buzzer alarm will be used to make incoming vehicles detect the waterway conditions in front and avoid wading events and safety accidents, the alarm module is equipped to remotely upload real-time water accumulation information to the traffic control department through the Internet of Things technology for timely processing. In addition, the device adopts the combined power supply mode of solar energy and backup charging power supply to realize the energy saving and environmental protection of the system.