Enclosed trunking of GIS modular structure

The utility model discloses an enclosed trunking of GIS modular structure. The enclosed trunking is composed of a trunking frame and one or more seal plates. The trunking frame is a trunking member, and is provided with one or more opening faces. The end portion of the trunking frame is provided with at least two or more docking interfaces. The one or more seal plates cover the one or more opening faces of the trunking frame to form an annular enclosed trunking. As three-dimensional three-pass, planar three-pass, two-pass, large direct pass, small direct pass standard modules and the like satisfying the needs of different positions can be produced, the one or more seal plates can be disassembled, the size of the interfaces among modules are of unified standard, all the types of trunking scheme arrangement can be met, a cable from the trunking to an aviation plug adopts a metal protective tube for protection, a cable outlet of the trunking adopts a standard buckle for packaging and fixing, the product design is thus more simplified, and the installation is more convenient.