Sliding plug-in bus duct convenient for dismounting connection side plates, and use method of bus duct

The invention discloses a sliding plug-in bus duct convenient for dismounting connection side plates, and a use method of bus duct. The sliding plug-in bus duct comprises a bus duct body, wherein two sides of the bus duct body are open, the bus duct body extends outwards to form a convex edge, and two sides of the bus duct body are provided with side plate assemblies used for protecting the bus duct body; and each side plate assembly comprises a sliding rail arranged in the convex edge, a first side plate and a second side plate which slide in the length direction of the sliding rail are arranged at the two ends of the sliding rail respectively, a clamping groove is formed in the side, close to the second side plate, of the first side plate, and a wedge-shaped block matched with the clamping groove is arranged on the face, opposite to the first side plate, of the second side plate. According to the invention, stability after the first side plates and the second side plates are assembled can be enhanced by arr