To provide a light-weight, easy and highly-efficient bathtub cleaner, which is capable of cleaning the entire periphery of a bathtub inner wall on a water surface by floating the bathtub cleaner on the water surface without discharging hot water remaining in a bathtub, supplying a small amount of a detergent and driving the bathtub cleaner, and which is capable of cleaning the entire periphery of the bathtub inner wall from an upper surface part to a lower surface part as the water surface is naturally lowered by discharging water from a drain port.

The bathtub cleaner operated by double axis drive, is capable of obtaining rotations at two speeds simultaneously by the low speed rotation of a rotary brush 1 and the high speed rotation of an impeller 11. The rotary brush 1 is provided on a core shaft 23, the impeller 11 is provided on an outer shaft 10, and the outer shaft 10 is provided in a concentric double axis structure, on the outside of the core shaft 23.