An emitter (120) forms a flow path that runs to a discharge part (250) from a water intake part (220) that is for taking in an irrigation liquid that is inside a tube. The flow path includes a flow volume control part (240). The flow volume control part (240) includes: an end surface (243) that includes a concave inclined surface that faces a film (300) that receives the pressure of the liquid inside the tube a hole (244) that opens at the center of the flow volume control part (240) and that connects to the discharge part (250) and a groove (245) that crosses the inclined surface and runs 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).
