The purpose of the present invention is to provide an emitter capable of controlling the amount of a discharged irrigation-liquid without relying on the pressure of the irrigation liquid inside a tube, while further reducing the deformation amount of a membrane member. The foregoing is achieved by an emitter including: a water intake part for taking in the irrigation liquid; a discharge part disposed facing the discharge port, the discharge part being for discharging the irrigation liquid; and a flow path for connecting the water intake part and the discharge part. In the emitter, the flow path includes: a flow rate reduction part containing a flexible first diaphragm disposed so as to partition the inside of the emitter and the inside of the tube, the flow rate reduction part reducing the flow rate of the irrigation liquid as a result of the first diaphragm deforming in accordance with the pressure of the irrigation liquid in the tube; and a discharge flow path that connects the flow rate reduction part and
