  Some of direct dark matter searches reported not only positive signals but
also annual modulation of the signal event. However, the parameter spaces have
been excluded by other experiments. Isospin violating dark matter solves the
contradiction by supposing different coupling to proton and neutron. We study
the possibility to test the favored parameter region by isospin violating dark
matter model with the future detector of dark matter using the nuclear
emulsion. Since the nuclear emulsion detector has directional sensitivity, the
detector is expected to examine whether the annual modulations observed other
experiments is caused by dark matter or background signals.
