The invention relates to the field of daily cleaning, in particular to a secondary water supply storage bucket lime scale cleaning device. The cleaning device comprises a cleaning device body for cleaning the inside of a water bucket, a lifting device for lifting the cleaning device body and a fixing device for fixing the lifting device. The fixing device comprises a first mounting plate, the lifting device is vertically mounted at the top end of the mounting plate, and the mounting plate is further provided with a first through hole for the cleaning device body to enter the inside of the water bucket. The lifting device comprises a second mounting plate for installing the cleaning device body. The cleaning device body is vertically installed on the second mounting plate, the output end ofthe cleaning device body is disposed downwardly to pass through the first through hole, and the output end of the cleaning device body is further provided with a plurality of cleaning head assembliesfor cleaning the inside of the water bucket. By means of the matching of the cleaning device body, the lifting device and the fixing device, the internal cleaning work of the secondary water supply storage bucket is completed, the workload of workers is reduced, and the efficiency is increased.