70 percent of a human weight is water. A man can not live without three-day drinking water. The sweet pure water which human can drink occupies 0.2 percent of the total water resource in the whole world. The water, which can be used by human being, is relatively small for living. So needing some water of the sea has already become the only measure for human living.

The solar purifying seawater equipment utilizes sunlight to provide motive force, gets rid of all the kinds of impure materials, ions, bacteria, virus and supplies human with sweet pure water.

This equipment production cost is low, and it needs no energy. It can be widely used in all the kinds of islands, ships, coasts and land.