Absorption amount of different kinds of flavor compounds (n-hexanal, heptanal, butyl acetate, propylacetate, 2-heptanone, 2-pentanone, isopentyl alcohol, octyl alcohol) by LDPE film, and the influence of different kinds of functional groups as well as chemical compositions of the flavor compounds on the polymers' absorption properties, were investigated by using GC method. The results showed that the absorption amount of aldehydes, ketones and alcohols decreases in order as judged by the chemical functional groups of the flavor compounds; ester groups also shows a high affinity to LDPE; generally, the absorption amounts to flavor compounds with the same functional group increases as the number of carbon atoms in the flavor compounds increases.