The effects of macroporous and strong alkaline anion exchange resin D201 modified with Fe(Ⅲ) on the adsorptive capacity for As(Ⅲ) in waste water under different experimental conditions.The results show that dynamic adsorption capacity was 1120mg-1092mg/L.And the static adsorptioncapacity was 43 mg/L.The optimum range of pH was 7 ～ 8 for D201-Fe adsorbing As(Ⅲ).The adsorptioncapacity of D201-Fe for As(Ⅲ) was still high in the presence o.And the staticadsorption capacity is 43mg/g.The regeneration extent of can reach 80% treated by the NaOH and NaCl with the concentration of 8%.