Super Absorbent Polymer is a new kind of macromolecule water-absorbing materials with high water-keeping ability. It can bring the following functions such as resisting drought and protecting seeds, increasing products and yielding, ameliorating the earth, preventing wind and fixing sand, the conservation of soil and water in agriculture, forestry, water conservancy, sand industry. It is the most promising fourth-generation agricultural chemical products that can be accepted by farmers after fertilizer, pesticide and terra film.