The Nd3 (Fe,Mo)2, compound with the Nd, (Fe,Ti)29-type monoclinic structure and its nitride have been synthesized. The magnetic transition, lattice Parameters, and the intrinsic magnetic properties, including Curie temperature, Tc, saturation magnetization, and magnetocrystalline anisotropy, of the Nd3 (Fe,Mo)29compound have been studied. The results show that the nitride has a structure related to the parent, but the unit cell volume, Curie temperature, To, and saturation magnetization, are 5. 9%,70. 9% and 6. 6%, respectively, greater than those of parent compound. It is also found that the spin reorientation phenomenon occurs at about 230 K in the parent compound, and the magnetocrystalline anisotropy of the Nds (Fe,Mo)2, compound is an easy plane above 230 K and a cone from 4. 2 K to 230 K. After nitrogenation, this spin reorientation phenomenon disappears.