A medical instrument, includes: an insertion section having a treatment instrument projection port and an active bending section at a position on the insertion sections proximal end portion side of the treatment instrument projection port a joystick by which an operation of the active bending section is inputted a driving section for driving the active bending section and a control section for controlling the joystick and the driving section, and the control section having an active bending section which performs a control in one control mode selected from a plurality of different control modes.
