An interdental cleaning device provided with a floss for removing food debris from between the teeth and comprising a case for housing the floss, and a suction cup attached to the case. Accordingly, because the suction cup is provided attached to the case, a user can position the floss on a wall surface position that facilitates easy use of the floss even in an ordinary shower that does not assume the use of the floss therein. In addition, a user can pull out (extract) and utilize only a desired length of the floss from the case with the case in a state of being attached to a wall surface by the suction cup. Hence, a user can pull out (withdraw) and cut the floss with a single hand.
