The invention discloses an artificial graphite negative electrode material for a lithium ion battery and a preparation method thereof. The preparation method for the artificial graphite negative electrode material comprises the following steps: preparing powder, adding a binder and/or a crystal nucleus-induced growth additive, kneading, carrying out compression molding, thermally roasting, carrying out nodulizing shaping and/or fusing, carrying out ultrahigh-temperature graphitization, screening, removing magnetism and screening. The preparation method disclosed by the invention is simple to operate, easy to control, lower in production cost and suitable for industrial production. The prepared artificial graphite negative electrode material has high graphitization degree, high compactness, high capacity, high coulombic efficiency, high conductivity and high multiplying power, and can be used for the lithium ion battery.