The invention discloses a trolley used for replacing a terminal box and belongs to the field of electric power tools. The trolley solves the technical problem that a terminal box is troublesome to disassemble and assemble in the prior art. The trolley comprises a trolley body, wheels are arranged at the bottom of the trolley body, a supporting frame is arranged on the trolley body, the supporting frame is provided with a supporting arm extending to one side, and the supporting arm is used for supporting an electric appliance installing frame in the terminal box. The trolley is used for disassembling and assembling the terminal box in a power substation.