To provide a cleaning sheet having improved cleaning efficiency, and to provide a cleaning tool mounted with the cleaning sheet.

A cleaning sheet 200 is mounted to a head 110. The cleaning sheet 200 has a cleaning area disposed corresponding to the lower surface of the head 110 while being mounted on the head 110, and strip-shaped portions separated from the lower surface of the head 110, and disposed to project from the side surfaces of the head, along a direction A parallel with the lower surface.