System and method for production of salt from seawater

The invention discloses a system and a method for production of salt from seawater. The system comprises a brine sun-evaporation pond for storing seawater, a glass greenhouse covering the brine sun-evaporation pond, a fan coil, a floor heating coil, a cooling air duct, a blower and a photovoltaic cell system, wherein the fan coil is arranged in the glass greenhouse and used for generating hot andhumid ascending air; the floor heating coil is arranged in the brine sun-evaporation pond; the cooling air duct is arranged on the top of the glass greenhouse and used for condensing and collecting humid and hot air from the inside of the glass greenhouse; the blower is arranged in the glass greenhouse, and the photovoltaic cell system is used for generating electric energy. The photovoltaic cellsystem can supply both electricity and heat, the gain effect can be generated by adjusting water surface temperature, relative humidity, seawater surface wind speed, seawater evaporation area and netevaporation amount, and the