The influence of water absorbing resin on moisture retention properties of soils is studied.After added into soil, the moisture absorbing ability of resin decreased abruptly, resulting in less soil water content increment than expected.The evaporation rate of water in loamy soil increased as resin proportion in soil increased.The evaporation rate of water in sandy soil decreased as resin proportion increased.Adding of water absorbent restricted water infiltration into deep layer and could lead to more evaporation in early stages if applied improperly.