Provided is an emitter (120) comprising a flow path that leads from an intake path (221) for taking in irrigation liquid that is within a tube to a recessed section (252). The flow path comprises opening/closing sections (248) that are arranged with a gap (249) therebetween. The gap (249) communicates with a discharge section. When the opening/closing sections (248) are pushed by the pressure of the irrigation fluid within a recessed section (242), the tip sections of each of the opening/closing sections (248) are brought into contact and one part of the gap (249) is blocked. The flow rate of the irrigation fluid within the emitter (120) is controlled by the remaining amount of said irrigation fluid that is capable of passing through the gap (249).