Most of Nd-pyrochlores show all-in-all-out long-ranged order ground state at low temperatures. Recently unconventional slow spin dynamics are reported in the paramagnetic state of pyrochlore insulators Nd2Sn2O7and Nd2Zr2O7. However, Nd2Mo2O7 reveals two-in-two-out spin ice like state at low temperature, and possesses delocalized electrons which may host novel phenomena associated with the interaction between the localized moments Nd3+ and the itinerant moment Mo4+. In particular, Nd2Mo2O7 exhibits unusual spin chirality. These motivate us to study the spin dynamics in Nd2Mo2O7 by mSR.