To provide a molager extermator which devises so as not to cause alertness in moles by keeping the catcher installation place and each catcher operation in a natural state and effectively trapping and extinguishing. SOLUTION: An obstacle in a mole passage is made solely of a V-shaped operating source transmission thread 10. At the time of setting the mole extermination device setting, the pulling spring 4 is used as a power source and the right turning force generated by hanging the center portion of the catch metal fitting 3 on the hinged operating pendulum 7 around the operating pendulum base metal fitting is used. The rotational force is maintained by applying the tip end portion of the actuating pendulum 7 to which the right turning force is applied to the center portion of the operating pin 6 which is applied to the two stopper supporting posts 5. At the time of passing through the molow, the operating pin 6 is lowered by touching the operating source transmission thread 10, the distal end portion of the actuating pendulum 7 releases the right rotational force holding state, instantaneously the capturing metal member 3 is moved to the force of the tension spring 4 Rapidly descend, to pierce and capture moles. (FIG.【課題】捕獲器設置場所や各捕獲器作動を自然状態に保ちモグラに警戒心を起こさせないように工夫して効率良く捕獲退治するモグラ退治器を提供する。【解決手段】モグラ通路内での障害物はV字型の作動源伝達糸10のみとなるようにする。モグラ退治器仕掛け設定の時、引きバネ4が動力源となり作動振子基点金具を軸に、掛けられた作動振子7に捕獲金具3の中央部を掛けることに依り発生する右回転力を利用する。2本のストッパー役支柱5に当てられた作動ピン6の中央部に右回転力のかかった作動振子7の先端部を当てる事により回転力を保持させる。モグラ通行の時、作動源伝達糸10に触れる事に依り作動ピン6を下降させ、作動振子7の先端部が右回転力保持状態を解除し、瞬時に捕獲金具3が引っ張りバネ4の力に依り急降下し、モグラを突き刺し捕獲する。【選択図】図5