To provide [ challenge ] the animal trap for capturing device capable of easy installation and safe and a reliable operation . On the side of the frame 1 surrounded by the walls of the square having a predetermined height , the opposing tread 10 having a retractable outer shape frame A1 A animal capturing trap device , oval outer U- shaped wire holding frame 12 of a pair are rotatably provided in a vertical direction with respect to the tread so as to form a . Both ends of the U- shaped wire holding frame of the pair is configured to protrude outside of the frame . Triggering means a pair of restricting the rotation by pressing at the same time the U- shaped wire holding frame is provided with a pair on one side of the footplate , the tip is formed into a loop , and means that can be freely changed the loop diameter more and characterized in that it consists of a trapping wire and means for biasing in a direction to reduce the loop size . [ Selection ] Figure Figure 1【課題】確実な作動と安全かつ容易な設置が可能な動物捕獲用罠装置を提供する。【解決手段】動物捕獲用罠装置は、一定の高さを有する四角形の壁部に囲まれた枠体1と、枠体に収納可能な外形を有する踏み板10の対向する側面に、外周が楕円を形成するように一対のU字状ワイヤ保持枠12が踏み板に対してそれぞれ垂直方向に回動自在に配置される。一対のU字状ワイヤ保持枠の両端部は枠体の外側にはみ出す構成となる。さらに踏み板の片側には一対のU字状ワイヤ保持枠を同時に押圧することにより回動を規制する一対のトリガー手段が設けられ、先端がループ状に構成され、ループ径を自在に変更できる手段とループ径を縮小する方向に付勢する手段とを有する捕獲ワイヤとからなることを特徴とする。【選択図】図1