The invention relates to improvement of insulating gas high-voltage ring-net switch cabinets in the power industry, and provides an atmospheric insulating gas high-voltage ring-net switch cabinet. The atmospheric insulating gas high-voltage ring-net switch cabinet comprises an operation chamber, a sealing chamber and a cable chamber. The sealing chamber is internally equipped with protection modules and isolating switches. An insulating box of each protection module is provided with two casings. Each casing is provided with a butterfly-shaped skirt. The cable chamber is internally equipped with a plurality of cable plug bushes, and each cable plug bush is extended to be installed in the sealing chamber. The atmospheric insulating gas high-voltage ring-net switch cabinet is characterized in that the length L1 of the butterfly-shaped skirt of each casing on the insulating box of each protection module is larger than or equal to 65mm, the edge of the notch of an arc-extinguishing chamber of each insulating box is provided with a butterfly-shaped skirt, and the distance L between the upper edge of the notch of the arc-extinguishing chamber and the bottom of the arc-extinguishing chamber is larger than or equal to 210mm. According to the technical scheme of the invention, the problem that the cabinet body sealing chamber of the existing insulating gas high-voltage ring-net switch cabinet is easy to burst open to leak insulating gases and has poor insulating safety performance is solved. The invention mainly aims to improve the existing insulating gas high-voltage ring-net switch cabinet.