An automatic liquid soap supplying mechanism for an aircraft lavatory unit, the aircraft lavatory unit comprising: a washbasin on a counter table above a floor; an automatic faucet that discharges water into the washbasin; a storage portion (18, 20) provided above or below the counter table; and a liquid soap dispenser, the liquid soap dispenser comprising: a dispenser body having a vertically long shape and storing liquid soap; and a nozzle provided at an end portion in a longitudinal direction of the dispenser body for dispensing the liquid soap stored in the dispenser body by being moved in the longitudinal direction, the automatic liquid soap supplying mechanism for an aircraft lavatory unit being provided with: a bracket attachable to a wall of the aircraft lavatory unit inside the storage portion (18, 20) above or below the counter table, wherein the bracket is configured for holding the dispenser body such that the longitudinal direction of the dispenser body is in a vertical direction and such that the nozzle is exposed from the storage portion (18, 20) and positioned above the washbasin; an actuator supportable by the wall, disposable inside the storage portion (18, 20), and having a vertically moving member that is moveable along the vertical direction on a side of the dispenser body; a connecting member that is configured for connecting the vertically moving member and the nozzle; a human body detection unit that is configured for detecting that a hand is located near the nozzle; and a control unit that activates the actuator based on a detection result of the human body detection unit to move the vertically moving member along the longitudinal direction of the dispenser body, and wherein the connecting member has a vertically extending portion that extends in the vertical direction, and at least a portion of the vertically extending portion is formed of a flexible member that is flexible. a washbasin on a counter table above a floor; an automatic faucet that discharges water into the washbasin; a storage portion (18, 20) provided above or below the counter table; and a liquid soap dispenser, a dispenser body having a vertically long shape and storing liquid soap; and a nozzle provided at an end portion in a longitudinal direction of the dispenser body for dispensing the liquid soap stored in the dispenser body by being moved in the longitudinal direction, a bracket attachable to a wall of the aircraft lavatory unit inside the storage portion (18, 20) above or below the counter table, wherein the bracket is configured for holding the dispenser body such that the longitudinal direction of the dispenser body is in a vertical direction and such that the nozzle is exposed from the storage portion (18, 20) and positioned above the washbasin; an actuator supportable by the wall, disposable inside the storage portion (18, 20), and having a vertically moving member that is moveable along the vertical direction on a side of the dispenser body; a connecting member that is configured for connecting the vertically moving member and the nozzle; a human body detection unit that is configured for detecting that a hand is located near the nozzle; and a control unit that activates the actuator based on a detection result of the human body detection unit to move the vertically moving member along the longitudinal direction of the dispenser body, and wherein the connecting member has a vertically extending portion that extends in the vertical direction, and at least a portion of the vertically extending portion is formed of a flexible member that is flexible.