  We investigate the baryon asymmetry in the supersymmetry
Dine-Fischler-Srednicki-Zhitnitsky axion model without R-parity. It turns out
that the R-parity violating terms economically explain the atmospheric
mass-squared difference of neutrinos and the appropriate amount of baryon
asymmetry through the Affleck-Dine mechanism. In this model, the axion is a
promising candidate for the dark matter and the axion isocurvature perturbation
is suppressed due to the large field values of Peccei-Quinn fields. Remarkably,
in some parameter regions explaining the baryon asymmetry and the axion dark
matter abundance, the proton decay will be explored in future experiments.
