A medical manipulator including: a flexible elongated section composed of an electrically conductive material and capable of transmitting torsional torque； a joint section disposed at a distal end of the elongated section, having a joint, and composed of an electrically conductive material； a treatment section attached to a distal end of the joint section； a cylindrical connection member composed of an insulating material, disposed between the elongated section and the joint section, and connecting the elongated section and the joint section； an electric cable that extends internally through the elongated section, the connection member, and the joint section in a state where the electric cable is electrically insulated from the elongated section and the joint section； and a cover composed of an insulating material and covers outer surfaces of the joint section and the elongated section.
