The miniaturized and compact metal enclosed ring network switchgear is a new generation of green and environmentally friendly gas switchgear that completely replaces SF6 gas with low pressure pure nitrogen (N2) on the basis of the original SF6 gas insulated ring network switchgear. All high-voltage live parts are sealed in the N2 gas box, which is not affected by the environment and is maintenance free. The modular stainless steel box airtight ring network cabinet can be expanded in any direction through bus connectors.