An apparatus for concentrating solution includes a plurality of nozzles (1) to spray solution into minute particle mist, a gas supplier (2) to transfer gas-mist mixture containing mist by supplying carrier gas to mist sprayed from the nozzle (1), and a separator (3) to separate a component with a low boiling point from a component with a high boiling point by supplying gas-mist mixture transferred using the gas supplier (2). The gas supplier (2) defines a plurality of apertures (9) to supply carrier gas to the plurality of nozzles (1). In this apparatus for concentrating solution, the plurality of nozzles (1) are spraying mist into carrier gas supplied from the apertures (9).