A medical manipulator comprising: a shaft; a distal end working unit provided on a distal end of the shaft and having an end effector configured to carry out a treatment on a treatment target; and a main body portion disposed on a proximal end of the shaft and configured to operate the end effector based on an input from a person, wherein the distal end working unit comprises: a bending portion disposed between the end effector and the shaft and which causes the distal end working unit to bend in a direction that differs from an axial direction of the shaft, in accordance with an operating force in a bending direction that is transmitted from the main body portion; and a tube, which is disposed at a position overlapping with the bending portion and is capable of bending in following relation to movement of the bending portion, wherein the tube transmits a rotational operating force, which is transmitted from the main body portion, to the end effector, so as to enable the end effector to be rotated through an unlimited range of rotation, characterized in that the distal end working unit transmits operating forces in a distal end direction and a proximal end direction, which are transferred from the main body portion, to the end effector through the tube. a shaft; a distal end working unit provided on a distal end of the shaft and having an end effector configured to carry out a treatment on a treatment target; and a main body portion disposed on a proximal end of the shaft and configured to operate the end effector based on an input from a person, wherein the distal end working unit comprises: a bending portion disposed between the end effector and the shaft and which causes the distal end working unit to bend in a direction that differs from an axial direction of the shaft, in accordance with an operating force in a bending direction that is transmitted from the main body portion; and a tube, which is disposed at a position overlapping with the bending portion and is capable of bending in following relation to movement of the bending portion, wherein the tube transmits a rotational operating force, which is transmitted from the main body portion, to the end effector, so as to enable the end effector to be rotated through an unlimited range of rotation, characterized in that the distal end working unit transmits operating forces in a distal end direction and a proximal end direction, which are transferred from the main body portion, to the end effector through the tube. a bending portion disposed between the end effector and the shaft and which causes the distal end working unit to bend in a direction that differs from an axial direction of the shaft, in accordance with an operating force in a bending direction that is transmitted from the main body portion; and a tube, which is disposed at a position overlapping with the bending portion and is capable of bending in following relation to movement of the bending portion, wherein the tube transmits a rotational operating force, which is transmitted from the main body portion, to the end effector, so as to enable the end effector to be rotated through an unlimited range of rotation, characterized in that the distal end working unit transmits operating forces in a distal end direction and a proximal end direction, which are transferred from the main body portion, to the end effector through the tube.