A new base-aluminum-chloride-loaded fiber [PET-AA-NN-Al2(OH)nCl6_n] was prepared with polyethylene glycol terephthalate (PET) as adsorbent for fast removal of arsenic (V) from water.This new fibrous adsorbent was characterized by using SEM and C NMR spectroscopy.Adsorption kinetic curve indicated that this new fibrous adsorbent could fast remove arsenic (V) from water,and adsorption isotherm also indicated that PET-AA-NN-Al2(OH)nCl6_n had high equilibrium adsorption capacity for arsenic (V).