Abstract: A method of enrichment of cadmium in supplementary materials used in tobacco manufacturing by ion-exchange and determination by FAAS was studied.Strong alkali anion resin was used in the experiment.Sample was digested by the microwave assisted heating.In the application to the analysis of 4 kinds of supplementary material samples,RSD′s of analytical results obtained were less than 3.5%,and results of recovery test were in the range of 96%-104%.