A dripper (120) comprises a dripper main body (121) and a movable unit (122). The moveable unit (122) forms the ceiling of a pressure reducing flow path (125) that reduces the pressure of a liquid flowing in the dripper (120), and the moveable unit advances and retracts in accordance with the pressure of the fluid in a tube (110). If the pressure is high, the height of the pressure reducing flow path (125) becomes lower and the flow rate of the liquid in the dripper (120) is thereby restricted. As a result, the flow rate of liquid discharged from a through hole (130) in the tube (110) can be maintained at a substantially constant rate regardless of the aforementioned pressure.