The invention discloses a preparation method for a silicon-based negative electrode material, a negative electrode material and a battery. The preparation method comprises the steps: mixing a carbon material, a silicon material, a proper quantity of adhesive and a conductive agent to prepare a sizing agent; carrying out spray drying granulation or extrusion kneading granulation on the sizing agent, thereby obtaining grains with the size of 5-35 microns; putting the grains in a rotary sintering furnace to sinter at 800-1100 DEG C in inert atmosphere, and preserving the heat for two hours, thereby obtaining sintered block materials; breaking up the block materials, and dipping the broken block materials in liquid asphalt or resin; putting the dipped materials in the rotary sintering furnace to sinter, and re-breaking up the obtained materials; carrying out a surface coating treatment on the re-broken grains by utilizing a surface coating material at 800-1100 DEG C, thereby obtaining the silicon-based negative electrode material.