The invention discloses transformer substation electrified assembling and disassembling smoke sensing equipment which comprises an insulation rod and a clamp body. The clamp body is arranged at one end of the insulation rod through a universal joint, the other end of the insulation rod is provided with a round hole penetrating through the insulation rod in the radial direction, a movable operationrod is arranged in the round hole, the clamp body is of a bowl-shaped structure matched with a smoke sensing device in appearance, the bottom of the clamp body is provided with at least two protrusions capable of being clamped into air inlets in the bottom of the smoke sensing device, a pressure sensor is arranged inside the clamp body, the pressure sensor is connected with a controller arrangedin the clamp body through a wire, and the controller is connected with an indicator lamp in the clamp body. By means of the combination of the insulation rod, the universal joint and the clamp body, the smoke sensing device is rapidly disassembled and assembled, the labor intensity of the operation and maintenance staff can be lowered, the working efficiency can be improved, and potential safety hazards caused by high aloft work are eliminated.