PROBLEM TO BE SOLVED: To provide a livestock processing system and a livestock processing method capable of suppressing deterioration in quality of meat after livestock processing. A slaughtering treatment system (1) includes a front lifting device (20) for lifting at least one of the front limbs (F) of a cattle, and a rear lifting device (30) for lifting at least one of the rear limbs (R) of the cattle. A hoisting height adjusting device 40 that adjusts the height of the forelimb F hoisted by the front hoisting device 20 and the height of the hind limb R hoisted by the rear hoisting device 30 so that the posture of the cattle to be hoisted is approximately horizontal. Equipped with. [Selection diagram] Figure 1【課題】と畜処理後の食肉の品質の低下を抑制することができると畜処理システム及びと畜処理方法を提供する。【解決手段】と畜処理システム１は、畜牛の前肢Ｆの少なくとも何れか一方を吊り上げるための前吊上装置２０と、畜牛の後肢Ｒの少なくとも何れか一方を吊り上げるための後吊上装置３０と、吊り上げられる畜牛の姿勢が略水平になるように前吊上装置２０によって吊り上げられる前肢Ｆの高さと後吊上装置３０によって吊り上げられる後肢Ｒの高さとを調整する吊上高調整装置４０と、を備える。【選択図】図１
