A set of genes for the molecular classifying of medulloblastoma is disclosed, including the following 24 genes: EPHA7 gene, OTX2 gene, ROBO1 gene, TTR gene, LGR5 gene, IGF2BP3 gene, TBR1 gene, ZFPM2 gene, TRDC gene, TRAC gene, PEX5L gene, NKD1 gene, RALYL gene, GABRA5 gene, GAD1 gene, TNC gene, KCNA1 gene, EOMES gene, MAB21L2 gene, WIF1 gene, DKK2 gene, PDLIM3 gene, IMPG2 gene, and KHDRBS2 gene. In addition, the present invention also discloses the use of the genome in the preparation of a kit and a gene chip for the molecular classifying of medulloblastoma. After validation, the present invention can accurately differentiate medulloblastoma WNT subgroup, SHE subgroup, Group3 subgroup, and Group4 subgroup, and has important clinical significance for the precise treatment of patients due to the objective results, high accuracy, and short experimental period.