The application of sodium metal battery is hampered by the large volume change and uncontrollable top growth of Na metal. Herein, a dual strategy including constructing a three‐dimensional gradient ZnO/Fe0.7Co0.3 (ZFC) framework of decreasing sodiophilic capability from bottom to top, and imposing magnetic fields based on magnetohydrodynamic (MHD) effect, is proposed to regulate the sodium deposition/stripping behavior and realize the bottom‐up deposition of Na. Therefore,
the ZFC framework under a magnetic field of 200 mT exhibits high electrochemical reversibility with a Coulombic efficiency of 99.77% at 1 mA cm−2 and 1 mAh cm−2. Meanwhile, the ZFC composite anode (ZFC@Na) with the magnetic field of 200 mT delivers a small polarization voltage of approximately10 mV and long cycle life of more than 2500 hours at 5 mA cm‐2 and 5 mAh cm‐2 in symmetric cells, along with good cycle stability in ZFC@Na||Na3V2(PO4)3 full cells (200 cycles at 1C with a high capacity retention of 98%). Accordingly, the novel strategy of combining magnetic fields and sodiophilic gradient frameworks provides a perspective to solve the issues of sodium dendrite growth.