The AMS-02 experiment is a large acceptance magnetic spectrometer which will operate on the International Space Station for more than 3 years. This will allow to perform high statistics studies of cosmic rays in space and the accurate determination of secondary-to-primary ratios such as B/C, and the ratio $^{10}$Be/$^{9}$B, thus allowing to discriminate among the possible propagation models and to infer other clues about the light elements production.