The experiment was conducted to investigate the effect of superabsorbent polymer (PR 3005 A) on water consumption of flax plant. The treatments including polymer (0, 500 and 1000 kg/ha) and irrigation depths (7.5 and 10 mm) as randomized complete block in split plot design with three replications. The experiment was carried out in agricultural research station, Zahak, Zabol, Iran. The results of experiment showed that application of polymer could improve water maintenance in sand soil. More polymer consumption resulted in higher plants, more number of branches and flower in shrub and more dry matter, significantly (P< 0.01). These results were seen in flax plant before and after flowering that emphasized the great effect of polymer in the improvement of flax growth properties.