The invention discloses a sodium molybdate-modified zinc lithium titanate negative electrode material and a preparation method thereof. The sodium molybdate-modified zinc lithium titanate negative electrode material adopts an expression of LZTO/NMO. The preparation method comprises the following steps: weighing zinc lithium titanate and sodium molybdate dehydrate according to a mass ratio of 1: (0.005-0.12), dissolving sodium molybdate into water to form a uniform solution, adding the zinc lithium titanate into a sodium molybdate solution, uniformly mixing, drying at 100-200 DEG C, sintering a product at 700-800 DEG C for 3-10 hours, and naturally cooling to room temperature. The sodium molybdate-modified zinc lithium titanate negative electrode material prepared by the preparation method provided by the invention has good electronic conductivity and ionic conductivity, has high Coulombic efficiency and electrochemical properties without surface carbon coating as a negative electrode material for a lithium-ion battery, and still has high reversible capacity and cycling stability during fast charge and discharge when the current density is 500mA/g and 1000mA/g.