A main control room screen cabinet body disassembling and assembling tool is disclosed, which includes arc-shaped heads, front support frame, telescopic connectors, rotary connectors, cranks, rear support frame, and small jacks, the arc-shaped heads are welded to the top ends of the four sides of the front support frame and the rear support frame, the rotary connectors are welded on transverse pipe racks of the front support frame and the rear support frame, the telescopic connectors mounted on the rotary connectors connect the front support frame and the rear support frame, the small jacks are welded and installed on the transverse pipe rack of the front support frame and the rear support frame, and each small jack is equipped with an elongated crank. The main control room screen cabinetbody disassembling tool is suitable for the disassembly and assembly of the screen cabinet body, the two support frames are combined through telescopic connectors, the support frams and the telescopicconnectors are non-fixedly connected and foldable, and each support frame is provided with a small jack to provide pushing force. During disassembly and assembly, the lifting ring of the adjacent cabinet body is used as the fulcrum, in use, operators are required to operate the small jacks at the same time, so that the two support frames can be telescoped and retracted uniformly and simultaneously bear force as far as possible.