The present invention provides an apparatus and a method for separating seawater into salt and water and continuously producing salt and drinking deep-sea water of a desired concentration. A salt production apparatus includes: a production tank 14 into which seawater is introduced and in which the seawater is warmed by hot air a seawater storage tank 16 a seawater heat storage tank 17 a water storage tank 23 and external piping. The seawater storage tank 16 and the seawater heat storage tank 17 are connected by the external piping with steam discharge ports of the production tank 14 and the water storage tank interposed therebetween. A solar water heater is provided between the seawater storage tank 16 and the seawater heat storage tank 17. Because the seawater warmed in the solar water heater is introduced into the 20 production tank 14 and further heated in the production tank 14, it is possible to provide the salt production apparatus with excellent thermal efficiency in heating of the seawater. Because a non-direct heating method is employed, it is possible to obtain the salt which is rich in minerals.
