The adsorption capacity and the reducing power of acidic cellulose based magnetic polyamidoxime adsorbents(AMAO) for bromine in adsorbing cycles were measured.The initial adsorption velocity of original adsorbent and its reduction proportion of adsorbed bromine were found to be twofold or more than that of the recovered AMAO.However,data obtained from the first reactivating adsorbent are almost the same as the second one.Possibly,the structure of the original adsorbent has changed thoroughly after adsorption. The slight variation of adsorption capacity and the rapid decrease of reduction proportion of bromine in cycling adsorption suggest that AMAO is an adsorbent for bromine uptake with an important practical value.