1. The manufacturing method of the silicon-based anode material chip is characterized in that: the silicon cutting waste chip is mixed with the structural stabilizer and ball-milled to form a molding material; The structural stabilizer is chloride of alkali metal and/or alkaline earth metal; Silicon cutting waste chips contain metal components.

2. Physical modification of plastic materials in the non-oxidizing atmosphere of 600~ 1000℃.

3. Wash and dry the physically modified material, then chemically modify it with a chemical modifier, and then wash and dry it to obtain the nano-silicon anode material for lithium ion batteries.