Despite the cost-effectiveness and easy scaling-up, the present commercialization of sodium ion batteries (SIBs) is still facing various challenges. Particularly, the poor rate performance and unstable capacity retention are the main difficulties in SIBs. Herein, we report a facile hydrothermal method to prepare 3D hierarchical NiCo2S4@MoS2 core/shell arrays for anode in SIBs. The designed NiCo2S4@MoS2 hierarchical structure consists of NiCo2S4 wall-like framework and MoS2 nanoflakes anchored on it. As anode materials for SIBs, the designed structure presents high rate performance at 398 mA h g−1 and 155 mA h g−1 at 400 mA g−1 and 6400 mA g−1, respectively. Notably, the highly reversible capacity is achieved after 400 cycles with coulombic efficiency higher than 99%. The excellent electrochemical performance originates from the hierarchical configuration of NiCo2S4 and MoS2, leading to a synergistic effect. The successful integration of MoS2 with 3D NiCo2S4 electrodes material provides unexplored route into facile and new methods in improving SIBs performance.