Rationally regulating the dynamic reconstruction of metal-organic frameworks (MOFs) under oxygen evolution reaction (OER) conditions is essential for developing highly active and durable catalysts, yet the role of rare-earth dopants in regulating the reconstruction mechanism remains poorly understood. Herein, we report a Cerium-doped NiFc-MOF catalyst on nickel foam (NiFcCe-MOF) to elucidate the Ce-steered reconstruction pathway during the OER process. Combined ex situ and in situ characterizations reveal that Ce incorporation drives the metal active centers toward high-spin electronic configurations, increasing their susceptibility to OH- attack and thereby promoting ligand dissociation to accelerate reconstruction kinetics. Simultaneously, the presence of Ce also promotes dynamic rearrangement of the local coordination environment in NiFcCe-MOF, steering the reconstruction pathway toward a more disordered γ-NiFeCeOOH active phase. Density functional theory (DFT) calculations further reveal that the reconstructed NiFeCeOOH phase exhibits a d-band center shifted away from the Fermi level, which balances the adsorption-desorption behavior of oxygenated intermediates and ultimately lowers the barrier of the potential-determining OH* → O* step. As a result, NiFeCeOOH achieves 100 mA cm-2 at an overpotential of only 231 mV, together with long-term durability exceeding 1500 h. This work underscores rare-earth-mediated control over reconstruction pathways as an effective strategy for rationally designing reconstruction-derived high-performance OER catalysts.