The seawater desalination equipment adopts reverse osmosis technology and is designed by an optimized system. It can directly desalinate seawater into sweet, hygienic and tasty drinking water, and the desalination water quality conforms to the national domestic drinking water quality standard (GB5749-2006). The equipment is suitable for fishing vessels, freighters, large and medium-sized ocean vessels and coastal water-scarce cities. It can effectively remove harmful components such as inorganic salt, organic bacteria and germs from seawater, and desalinate seawater into high-quality water that complies with the National Drinking Water Standard (GB5749-2006).