The second forceps member and (21) the first forceps members of a pair are supported in a relatively rotatable manner (23) clamp pivot axis (22), forceps for an endoscope of the present invention, forward and backward direction of the axis O and the second (21) first position different closing wires which relative rotation (22) a second forceps member and (21) the first forceps member (30), the position of the axis O direction by being operated by if it were in the (22) position, and the stopper for switching the relative rotatable angle second forceps member and (21) the first forceps member (22) and (60), and is moved back and forth in the axial direction O at adjustment wires to move between a first position and a second position (60) a stopper (70), (70) with inserted open wire adjustment and wires (30), first from the tip I a sheath (60) is protruded and the stopper (22) (21), the second forceps member forceps member, and (40).本発明の内視鏡用鉗子は、鉗子回動軸(23)によって相対回動可能に支持された一対の第一鉗子部材(21)及び第二鉗子部材(22)と、軸線O方向に進退操作されることで第一鉗子部材(21)及び第二鉗子部材(22)を相対回動させる開閉用ワイヤ(30)と、軸線O方向の位置が互いに異なる第一位置(21)と第二位置(22)とにある場合とによって、第一鉗子部材(21)及び第二鉗子部材(22)の相対回動可能な角度を切り替えるストッパー(60)と、軸線O方向に進退操作されることで、ストッパー(60)を第一位置と第二位置との間で移動させる調整用ワイヤ(70)と、開閉用ワイヤ(30)及び調整用ワイヤ(70)が挿通するとともに、先端から第一鉗子部材(21)、第二鉗子部材(22)及びストッパー(60)が突出したシース(40)と、を備える。
