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This invention relates to a porous carbon material with a hierarchical distribution, its preparation method, and its application. The pores of the porous carbon material include: a first micropore (less than 10%), a second micropore (5%–15%), a first mesopore (15%–25%), a second mesopore (50%–70%), a third mesopore (1%–10%), and a fourth mesopore (less than 1%). The first micropore has a pore size of less than 1 nm; the second micropore has a pore size of greater than or equal to 1 nm but less than 2 nm; the first mesopore has a pore size of greater than or equal to 2 nm but less than 4 nm; the second mesopore has a pore size of greater than or equal to 4 nm but less than 7 nm; the third mesopore has a pore size of greater than or equal to 7 nm but less than 10 nm; and the fourth mesopore has a pore size of greater than or equal to 10 nm but less than or equal to 50 nm. The silicon-carbon composite material prepared using this porous carbon material has a high amount of nano-silicon deposition and good uniformity. Applying the silicon-carbon composite material to lithium-ion batteries can improve the battery's initial efficiency and specific capacity.