Super absorbent polymer is a new type macro molecular material for water keeping. Super absorbent polymer has special structure and excellent hydrophilic group, which make it not dissolve in water but can absorb hundred times of water, and process superior water retaining capacity. Several excellent capacities of super absorbent polymer ensure the high quality of sanitary products, such as the high absorbing speed, good absorbence under load and excellent capacity of anti-moisture. It’s nontoxic, harmless and nonpolluting with super water absorbing ability and water preserving ability. Thus it is a green and environment protecting high-tech product.