Abstract: Air flow-circulation seawater desalination apparatus includes a condensation region pipe having upper and lower ends opening in a main body and constituting a boundary wall between an evaporation region outside the pipe and condensation region inside the pipe, a heat supply section for storing heat and keeping an upper part in the main body at a high temperature, an airflow circulator by the lower part of the main body to circulate airflow from the condensation region to the evaporation region, a seawater preheat pipe for preheating raw seawater carried from the outside to the upper part of the evaporation region after penetrating the lower part of the apparatus and passing through the condensation region pipe, and a seawater spray device for spraying the seawater from a high position in the evaporation region and evaporating the seawater to produce high-temperature steam at a high position in the apparatus.