The industrial internet intelligent terminal adopts a low-power, intelligent, compact, and standardized design concept to achieve centralized acquisition, edge analysis, and optimized control of on-site water, electricity, gas, heat, and cold instruments, sensors, and controllers (e.g., PLCs). The device features rich communication interfaces and can develop corresponding terminal interaction functions as needed. It supports MQTT protocol for cloud system integration and ensures stable and reliable data transmission through mechanisms such as breakpoint resume, historical storage, and link monitoring.