The purpose of the present invention is to provide scaffolding equipment for smokestack dismantling and a dismantling method using the equipment capable of easily dismantling even aggregate smokestacks at a low cost while maintaining safety. Scaffolding equipment for smokestack dismantling (10), that is mounted to the top of an aggregate smokestack (13) for which four chimneys (132) are disposed mutually adjacent, comprises: an uneven scaffold having an upper scaffold portion (14) that is a single plate capable of being mounted on the upper end of the chimneys (132) and lower scaffold portions (18) each coupled to the upper scaffold portion (14) and, with the upper scaffold portion (14) mounted as described above, located at a lower position in the chimneys (132); and chain blocks (28) that suspend and support the uneven scaffold inside of the wall of the chimneys (132) and for which the suspension height is adjustable. With this configuration, because the scaffold at the top end of the chimneys (132) is the single-plate upper scaffold portion (14), there is no danger of the lower scaffold portion in each chimney moving vertically due to contact between scaffolds nor of workers losing their balance, and work safety is improved.