Abstract: The disposable cleaning auxiliary tool comprises a flexible sheet-like non-liquid-permeable material being made to have a bottom portion, a duct portion arranged so as to extend further therebeyond from a location serving as soiled water outlet provided at an outer periphery of said bottom portion, a pouch-like water-receiving portion arranged at a surface at one side or surfaces at both sides of an extended tip of said duct portion, a cylindrical gas filled portion arranged at an outer peripheral portion other than the location serving as soiled water outlet at said bottom portion, and a gas filling inlet for filling said cylindrical gas filled portion, and is capable of being folded and stored when the cylindrical gas filled portion is not filled with gas, a concavity formed when the body of the bedridden individual pushes downward serves as a reservoir, another concavity formed serves as a drainage path.