Abstract: In order to support the "dual carbon" goals, adapt to the requirements of limiting the use of SF₆ gas, and enhance the environmental friendliness of power grid equipment, research on the standardization of SF₆ mixed gas and eco-friendly alternative gas equipment is conducted. Based on the current status of eco-friendly gas equipment research and application, the technical standards of SF₆/N₂ mixed gas equipment were reviewed. A standardization framework was established covering equipment materials, operation and maintenance, test and detection, instruments and meters. For eco-friendly alternative gas C₄F₇N equipment replacing SF₆, a standardization framework was constructed, including gas performance detection technology and method, equipment operation and maintenance, test and detection, and recycling. Based on this, a standard system of SF₆ mixed gas and eco-friendly alternative gas equipment was preliminarily proposed, consisting of six sub-branches consistent with the standard system of GIS equipment in power industry, reflecting the research direction of eco-friendly gas equipment standardization.