Disassembling and assembling tool

The invention relates to a disassembling and assembling tool which is used for dismounting a down lead. The disassembling and assembling tool comprises a fixing seat and an insulating rod, wherein the fixing seat is used for being fixed to a tower, the fixing seat comprises a first support and a second support which are oppositely arranged, the first support is provided with a limiting hole used for being arranged on the head of a bolt in a sleeving mode, the second support is provided with a mounting part, the insulating rod is detachably connected to the mounting part, and the insulating rod can abut against a screw rod so as to allow the down lead to be arranged on the insulating rod in a sleeving mode. According to the disassembling and assembling tool, the first support and the second support which are opposite to each other are arranged, so space capable of containing the tower is formed between the first support and the second support; through the arrangement of the insulating rod, after a nut for fixi