The invention relates to a device in the technical field of super-high voltage switches, specifically a disconnecting switch new structure for GIS (Gas Insulated Switchgear). The structure employs a three-phase dividing mode, and employs crank connecting mechanical linkage and can achieve corner-type arrangement and linear-type arrangement. The dynamic and static sides of a disconnecting switch can be connected with a grounding switch device. Compared with the prior art, the invention has the following beneficial effects that (1), the disconnecting switch can achieve the corner-type arrangement and linear-type arrangement in the same rotating mode; (2), two sides of a fracture of the disconnecting switch are integrated with two grounding switches or one grounding switch and one fault switching-on grounding switch; (3), the disconnecting switch is simple and beautiful, is compact in structure, is convenient to install, is high in integration degree, reduces the number of modules, and reduces the cost; (4), there is a no-basin type insulator below the fracture of the disconnecting switch in the linear-type arrangement, thereby reducing the risk that metal fragments fall to a basin and causes the discharge, and improving the reliability of the product.