In order to improve the intelligent level of the switchgear, improve the plug and play performance of smart devices, this article focuses on the Internet of Things (IoT) terminal, adopts software to define the system architecture of the terminal, and a variety of sensors detect and acquire various electrical and non electrical information required for operation and maintenance in the switchgear to form an edge sensing data acquisition and analysis processing network with IoT terminals as the core. Intelligent switchgear systems is built for various applications, and research and design of micro application services such as temperature and humidity collection and analysis of switchgear environment, temperature rise assessment, partial discharge analysis and early warning, video image processing around edge computing are carried out, which provides support for intelligent construction of switchgear