A nebulizer kit includes a case body, a flow channel formation member that covers an opening of the case body, an outside air introduction tube erected vertically from a base surface of the flow channel formation member and including a long groove formed in an inner circumferential surface thereof, a compressed air introduction tube below the outside air introduction tube within the case body and extending toward the interior of the outside air introduction tube, and an atomizing area formation member. The atomizing area formation member includes a liquid suction tube formation portion, a baffle, and a baffle support portion that connects the liquid suction tube formation portion and the baffle and that extends toward a side area of the baffle from an outer surface of the liquid suction tube formation portion. The baffle support portion is contained within the long groove of the outside air introduction tube.