The invention discloses a low-frequency sound-insulation artificial material based on a fractal structure. The low-frequency sound-insulation artificial material comprises a substrate material and a fractal structure unit array on the substrate material. The fractal structure unit array is obtained through arranging multi-order fractal periodical units and is manufactured through 3D printing. Because the artificial acoustic fractal structure has self similarity and relatively high spatial folding characteristic, when a sound wave is transmitted into the material structure, a sound wave propagation path is greatly prolonged by a fractal path, and furthermore multiple resonances are generated in a low-frequency sound wave range so that sound wave energy which is transmitted in the low-frequency sound wave range rapidly reduces along with propagation distance increase, thereby realizing low-frequency sound wave insulation. The low-frequency sound-insulation artificial material has good effects of small weight and high low-frequency noise insulation effect. The low-frequency sound-insulation artificial material is a novel sound insulation material for realizing a low-noise working and living environment.