A medical robot comprising: an arm unit; a control unit that controls driving of the arm unit; a holding body that is connected to the arm unit at a connection portion and holds a held body; and a selector switch provided on the holding body for selectively switching between a control state in which the driving of the arm unit is controlled by the control unit and a manual state in which control by the control unit is released, wherein the selector switch is disposed on both sides of a reference plane including an extending direction of the arm unit and an extending direction of the held body, and the control unit performs control of switching between the control state and the manual state based on an operation signal from the selector switch, wherein the selector switch has a first selector switch provided on one side of the reference plane and a second selector switch (142, 42) provided on another side, and the control unit switches between the control state and the manual state based on the operation signal from one of the first selector switch and the second selector switch (142, 42), characterized in that the control unit is configured to: provided that control of switching from the control state to the manual state is carried out based on the operation signal output from the first selector switch, carry out control of returning from the manual state to the control state when another version of the operation signal output from the first selector switch is input; and provided that control of switching from the control state to the manual state is carried out based on the operation signal output from the second selector switch (142, 42), carry out control of returning from the manual state to the control state when another version of the operation signal output from the second selector switch (142, 42) is input. an arm unit; a control unit that controls driving of the arm unit; a holding body that is connected to the arm unit at a connection portion and holds a held body; and a selector switch provided on the holding body for selectively switching between a control state in which the driving of the arm unit is controlled by the control unit and a manual state in which control by the control unit is released, wherein the selector switch is disposed on both sides of a reference plane including an extending direction of the arm unit and an extending direction of the held body, and the control unit performs control of switching between the control state and the manual state based on an operation signal from the selector switch, wherein the selector switch has a first selector switch provided on one side of the reference plane and a second selector switch (142, 42) provided on another side, and the control unit switches between the control state and the manual state based on the operation signal from one of the first selector switch and the second selector switch (142, 42), characterized in that the control unit is configured to: provided that control of switching from the control state to the manual state is carried out based on the operation signal output from the first selector switch, carry out control of returning from the manual state to the control state when another version of the operation signal output from the first selector switch is input; and provided that control of switching from the control state to the manual state is carried out based on the operation signal output from the second selector switch (142, 42), carry out control of returning from the manual state to the control state when another version of the operation signal output from the second selector switch (142, 42) is input. provided that control of switching from the control state to the manual state is carried out based on the operation signal output from the first selector switch, carry out control of returning from the manual state to the control state when another version of the operation signal output from the first selector switch is input; and provided that control of switching from the control state to the manual state is carried out based on the operation signal output from the second selector switch (142, 42), carry out control of returning from the manual state to the control state when another version of the operation signal output from the second selector switch (142, 42) is input.