Single crystalline nanorod (Nr) is considered to be a promising candidate in many nano-electric devices due to its excellent electric properties. Here we report a method to fabricate 0.65(Mg1/3Nb2/3)O3–0.35PbTiO3 (PMN–PT) single crystalline Nr by controlling the hydrothermal synthesis temperature and reactive time. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) have been employed to investigate the morphology and crystal characteristics of the PMN–PT Nrs. It was confirmed that single crystalline PMN–PT Nrs have been fabricated under optimal synthesis condition. Finally, the ferroelectric properties of PMN–PT Nrs were measured, and the coercive field, remnant polarization and spontaneous polarization of the nanorods are 2.78 kV/mm, 17.08 μC/cm2 and 31.25 μC/cm2 respectively.