The present invention relates to a method for producing a porous silicon-carbon complex, a secondary battery negative electrode material produced by the production method, and a secondary battery comprising the secondary battery negative electrode material. The method for producing a porous silicon-carbon complex according to an embodiment of the present invention comprises: a step of mixing a silicon precursor with a heat dispersant and subjecting the mixture to first heat treatment, thereby producing a first mixture; a step of mixing the first mixture with a metal reducing agent, thereby producing a second mixture; a step of putting the second mixture into a reaction chamber and subjecting same to second heat treatment, thereby reducing the silicon precursor and producing a reaction product; a step of washing the reaction product and collecting porous silicon particles; a step of mixing the porous silicon particles with a carbon precursor, thereby producing a third mixture; and a step of subjecting the third mixture to third heat treatment, thereby coating the porous silicon particles with carbon.
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