Weakly interacting massive particles (WIMPs) are promising candidate for dark matter. Direct detection experiments of dark matter aim to detect nuclear recoil emitted by scattering of WIMPs and standard model particles. In directional dark matter detection, not only recoil energy but also direction of nuclear recoil are expected to be detected. It has the potential to give constraints on dark matter nature such as velocity distribution model. I theoretically study the possibility of the directional dark matter detection. My another interest is neutrino physics. Neutrino would be a hint to the Physics beyond the Standard Model as well as dark matter. I have constructed new theoretical models including both dark matter and neutrinos.