A spraying device for spraying liquid, comprising: a hollow barrel having a spray nozzle connecting portion formed at a tip end and a flange formed at a base end; a gasket provided slidably movable in liquid-tight manner in said barrel; a rod coupled to a base end of the gasket; a guide groove provided on said rod; and a regulating member, provided on said barrel, having an opening allowing passage of the rod formed at a center, and having a projection projecting from an edge of the opening to the center to be slidably fit with said guide groove; wherein said guide groove includes at least a first administering groove and a second administering groove provided continuous from said first administering groove; said first groove is configured to include a priming portion and a first administering portion extending from said priming portion to a base end along a longitudinal direction; said second administering groove is configured to include a transitional portion extending in the circumferential direction with a groove wall on the base end side aligned with the base end of said first administering portion, and a second administering portion extending from the transitional portion to the base end along the longitudinal direction; and a first energizing protrusion engageable with said projection is provided at a boundary between said priming portion and said first administering portion, and a second energizing protrusion engageable with said projection is provided at a boundary between said transitional portion and said second administering portion, said energizing protrusions (413, 423) are of such a size that, when said projection abuts one of said energizing protrusions, said projection can move over said protrusion when said rod is pushed with force toward the tip end. a hollow barrel having a spray nozzle connecting portion formed at a tip end and a flange formed at a base end; a gasket provided slidably movable in liquid-tight manner in said barrel; a rod coupled to a base end of the gasket; a guide groove provided on said rod; and a regulating member, provided on said barrel, having an opening allowing passage of the rod formed at a center, and having a projection projecting from an edge of the opening to the center to be slidably fit with said guide groove; wherein said guide groove includes at least a first administering groove and a second administering groove provided continuous from said first administering groove; said first groove is configured to include a priming portion and a first administering portion extending from said priming portion to a base end along a longitudinal direction; said second administering groove is configured to include a transitional portion extending in the circumferential direction with a groove wall on the base end side aligned with the base end of said first administering portion, and a second administering portion extending from the transitional portion to the base end along the longitudinal direction; and a first energizing protrusion engageable with said projection is provided at a boundary between said priming portion and said first administering portion, and a second energizing protrusion engageable with said projection is provided at a boundary between said transitional portion and said second administering portion, said energizing protrusions (413, 423) are of such a size that, when said projection abuts one of said energizing protrusions, said projection can move over said protrusion when said rod is pushed with force toward the tip end.