The invention discloses a sodium-ion battery nickel titanate cathode material and a preparation method thereof. The nickel titanate material has a loose and porous structure and a disc-shaped micro-structure, and has low potential, high specificity and excellent circulation performance when used as a sodium-ion battery cathode material. The preparation method of the sodium-ion battery nickel titanate cathode material is simple, cost is low, and wide industrial application prospects are achieved.