An emitter has a water intake part, a reduced-pressure flow path, a flow rate adjustment part, and a discharge part. The flow rate adjustment part includes a diaphragm, a pedestal, a first connecting hole, a communication groove, a second connecting hole, and a flow path stopper. When the pressure difference between the pressure of irrigation liquid flowing in a tube, and the pressure of the irrigation liquid between the diaphragm and the pedestal, is less than a prescribed value, the second connecting hole is closed by the flow path stopper, and the irrigation liquid between the diaphragm and the pedestal is guided through the first connecting hole to the discharge part. When the pressure difference is greater than or equal to the prescribed value, the second connecting hole is opened by the diaphragm deforming and the flow path stopper moving, and at least a part of the irrigation liquid between the diaphragm and the pedestal is guided through the second connecting hole to the discharge part.
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