To provide a removing device for a toxic substance or the like adhered to a narrow structure or the like capable of automatically removing the toxic substance or the like without scattering it.

In the removing device for the toxic substance or the like adhered to the narrow structure of the like, an air curtain apparatus 2 operated by compressed air fed from an air tank 1 is rotatably attached to an upper part of the air tank 1, a remover 3 operated by compressed air fed from the air tank 1 is rotatably attached to a lower part of the air tank 1, and a water sprinkler 5 sprinkling water fed from a feed water pipe 4 is rotatably attached to a tip of the feed water pipe 4 arranged so as to pierce a center part of the air tank 1.