An embodiment of the present invention relates to: an anode material for a lithium ion secondary battery, comprising a silicon-silicon carbide composite; a preparation method therefor; and a lithium ion secondary battery comprising same, and, more specifically, the anode material for a lithium ion secondary battery, according to the embodiment, is an anode material, which comprises a silicon-silicon carbide composite containing silicon particles and silicon carbide particles, wherein the silicon particles and the silicon carbide particles in the silicon-silicon carbide composite are dispersed from each other and the amount of the silicon carbide particles satisfies a specific range, and thus high capacity and excellent cycle characteristics can be implemented while a low volume expansivity is maintained.