Abstract: An assembly-disassembly tool is adapted for assembling and disassembling a lamp board. The assembly-disassembly tool includes a magnetic conductive member and a sliding module. The magnetic conductive member includes a through hole. When the disassembly tool is positioned on the lamp board, the through hole of the magnetic conductive member is aligned with an iron sheet of the light board. The sliding module including a magnet is slidably disposed above the magnetic conductive member along a direction parallel to a top surface of the magnetic conductive member. When the sliding module is located at a first position relative to the magnetic conductive member, the magnet is staggered with the through hole. When the sliding module slides to a second position relative to the magnetic conductive member, the magnet is aligned with the through hole and is configured to magnetically attract the iron sheet of the lamp board.