In the present invention, a chemical agent is appropriately sprayed onto a predetermined position in accordance with the type, the shape, and the like of an object. A chemical agent spraying device (10) is provided with a recognition unit (12), a spraying unit (15), and a control unit (16). The recognition unit (12) recognizes an object (5). The spraying unit (15) sprays a chemical agent toward a predetermined position. The control unit (16) controls the spraying unit (15) in accordance with the object (5) recognized by the recognition unit (12).