Herein disclosed a suction cup device including: a case; a suction cup of which a surface on one side in the thickness direction thereof is a suction surface and a surface on the other side is a back surface; a displacement mechanism provided in the case and operative to support a central part in the radial direction of the back surface of the suction cup in such a manner that the central part can be displaced in the thickness direction; and a contact part which is provided in the case and which, when the suction surface makes suction contact with a surface to be sucked, can make contact with a part, on the outside of the suction contact part of the surface to be sucked, of the surface to be sucked, wherein the contact part includes a plurality of contact elements spaced from each other and making contact with a plurality of parts of said surface to be sucked which are spaced at intervals in the circumferential direction of the suction cup.