Descaling device for cleaning building curtain wall

The invention discloses a descaling device for cleaning a building curtain wall, which comprises a mounting plate, a protective cover, a lifting hook, a cleaning device, a driving device, a water circulating device and a drying device, the protective cover is fixed on one side of the mounting plate, and the lifting hook is fixed at the top of the protective cover, so that the lifting is convenient. The descaling device cleans the dirt on the surface of the curtain wall glass through the cleaning device, a driving motor in the driving device provides power for the cleaning device, so that the cleaning device operates normally, the working efficiency is improved, meanwhile, the whole device is lifted through a lifting hook, potential safety hazards caused by standing outside a curtain wall during manual cleaning are avoided, the water circulation device is used for providing a water source for the cleaning device, meanwhile sewage obtained after cleaning is collected, residual water spots after the curtain wall