Abstract: The distribution ring network cabinet has many composition intervals,compact structure,high insulation requirements and heavy operation load,which is prone to equipment failure caused by the influence of power grid,environmental impact or its own quality reasons. How to find and eliminate hidden dangers or faults of ring network cabinet in time and realize active maintenance and efficient handling of equipment faults is an urgent problem to be solved in distribution network.The Internet of Things technology was adopted to optimize the overall design of the ring network cabinet,so as to realize the functions of on-line monitoring of cable head temperature,partial discharge,operating mechanism action characteristics,equipment health status evaluation,feeder synchronous line loss monitoring and abnormal early warning. Moreover,a distributed feeder automation processing strategy based on Internet of Things edge computing was proposed.A pilot project of Internet of things intelligent ring network cabinet for a cable line was carried out,and the application effect was good,which shows the feasibility and effectiveness of the application of Internet of Things technology in ring network cabinet.