Abstract: Super absorbent polymer is widely used in agriculture as a new material of absorbing and storing water. It can hold water in soil and reduce soil erosion by the way of absorbing water itself, increasing soil aggregates and porosity, reducing soil bulk density and evaporation. The super absorbent added in soil can reduce the fertilizer loss, control the pollution caused by the lost fertilizer, increase fertilizer use efficiency. A lot of experiments showed that using super absorbent polymer properly absolutely increased the rate of seed emergence and promoted the plant growth with proper soil moisture. The multifunctional super absorbent polymer with lower cost should be developed and the application fields and scale should be extended in the further study.