A body-cavity foreign object capturing device including: a first operation wire; plural framework wire members, base end portions of which are coupled to a distal end portion of the first operation wire, and distal end portions of which are bundled together; and a second operation wire which is coupled to the distal end portions of the plural framework wire members, which extends toward a base end of the first operation wire while being separated from the first operation wire, and which is operable independently from the first operation wire, wherein the second operation wire is caused to have a curved shape as a free-state initial shape as viewed from an axial distal end side so as to have: a distal end portion which is bent in an outer radial direction from a coupling portion with the plural framework wire members; a bent portion which extends in a circumferential direction from the distal end portion while expanding; and a curved portion which extends from the bent portion and returns toward the base end of the first operation wire while being gently curved, when the second operation wire is moved relative to the first operation wire toward the distal end, the curved portion of the second operation wire spirally expands along the inner wall of a tubular organ and is moved to the distal end side with respect to the coupling portion. a first operation wire; plural framework wire members, base end portions of which are coupled to a distal end portion of the first operation wire, and distal end portions of which are bundled together; and a second operation wire which is coupled to the distal end portions of the plural framework wire members, which extends toward a base end of the first operation wire while being separated from the first operation wire, and which is operable independently from the first operation wire, wherein the second operation wire is caused to have a curved shape as a free-state initial shape as viewed from an axial distal end side so as to have: a distal end portion which is bent in an outer radial direction from a coupling portion with the plural framework wire members; a bent portion which extends in a circumferential direction from the distal end portion while expanding; and a curved portion which extends from the bent portion and returns toward the base end of the first operation wire while being gently curved, when the second operation wire is moved relative to the first operation wire toward the distal end, the curved portion of the second operation wire spirally expands along the inner wall of a tubular organ and is moved to the distal end side with respect to the coupling portion. a distal end portion which is bent in an outer radial direction from a coupling portion with the plural framework wire members; a bent portion which extends in a circumferential direction from the distal end portion while expanding; and a curved portion which extends from the bent portion and returns toward the base end of the first operation wire while being gently curved, when the second operation wire is moved relative to the first operation wire toward the distal end, the curved portion of the second operation wire spirally expands along the inner wall of a tubular organ and is moved to the distal end side with respect to the coupling portion.