An emitter (120) forms a flow path that runs to a discharge part (250) from an intake part (220) for receiving an irrigation liquid in a tube. The flow path includes a flow volume control part (240) which includes: an end surface (243) including a concave inclined surface that faces a film (300) for receiving the pressure of the liquid inside the tube; a hole (244) that opens at the center of the flow volume control part (240) and connects to the discharge part (250); and a groove (245) crossing the inclined surface and running to the hole (244). When the film (300) adheres to the inclined surface as a result of the pressure of the irrigation liquid inside the tube, the flow volume of the irrigation liquid inside the emitter (120) is controlled so as to be a volume that can pass through the groove (245).