Cleaning device

The invention discloses a cleaning device which comprises a lifting device, a telescopic supporting device and a cleaning brush head. The cleaning brush head is mounted at the top end of the lifting device, and the telescopic end of the telescopic supporting device is hinged to the lifting device. When a building needs to be cleaned, the lifting device and the telescopic supporting device stretch out at the same time. The telescopic supporting device is used for supporting the lifting device. The cleaning brush head cleans the part, to be cleaned, of the building in the moving process of the lifting device. After cleaning is finished, the lifting device and the telescopic device retract, and working staff store the cleaning device. The lifting device is supported by the telescopic supporting device to stretch out and retract, the cleaning brush head is driven to move through the lifting device, and therefore cleaning work of the building is completed. In this way, the cleaning device can lower the labor intensity of the working staff for cleaning the building.