The content of arsenic in textiles was determined by atomic fluorescence spectroscopy.The linear range,detection limit,quantitation limit,accuracy and precision of the method were stud-ied and analyzed,and the uncertainty was evaluated.The results show that the detection limit of this method was 0.007 mg/kg,the quantitative limit was 0.017 mg/kg,the precision was less than 10%,and the relative standard uncertainty was 2.4%.The laboratory can meet the detection requirements of the standard method.