Abstract: A spiral duster includes a cleaning cloth, a handle, a bent member connected to the handle, a bent tenon connected to the bent member, and a spiral member having a neck connected to the bent tenon and a flat portion extended from the neck, wherein two studs are formed on lower portions of the lateral surfaces of the bent member respectively; the bent tenon has a cambered recess for receiving the bent member; two holes are formed on lower portions of the lateral surfaces of the cambered recess respectively for receiving the studs on the bent member; the spiral member is to be received in a pocket of the cleaning cloth; a slot is disposed under the flat portion; a bar is inserted into the slot for fixing the cleaning cloth to the spiral member; and the cleaning cloth becomes spiral by wrapping around the spiral member.