The invention belongs to the technical field of traditional Chinese medicines, and provides a traditional Chinese medicine composition for treating cancer. The traditional Chinese medicine composition comprises the following components in parts by weight: 1-3 parts of lytta vesicatoria, 10-30 parts of toad, 10-30 parts of geckos, 10-30 parts of buthus martensii, 8-20 parts of centipede, 8-20 parts of leeches, 10-20 parts of earthworms, 1-6 parts of musk, 1-6 parts of calculus bovis, 10-60 parts of pseudo-ginseng, 60-110 parts of Chinese actinidia roots, 10-35 parts of sargentodoxa cuneata, 10-35 parts of akebiaquinata, 10-35 parts of cinnamomum camphora roots, 25-60 parts of sculellaria barbata, 40-60 parts of salvia chinensis, 150-230 parts of hedyotis diffusa, 10-30 parts of atractylodes macrocephala, 15-25 parts of poria cocos, 15-25 parts of grifola, 40-60 parts of livistona chinensis, 10-30 parts of roots of common peony, 10-30 parts of trigone, 10-30 parts of curcuma zedoary, 25-60 parts of turtle shells, 12-30 parts of pangolin, 8-18 parts of frankincense, 8-18 parts of myrrh, 6-12 parts of crocus sativus, 25-60 parts of ganoderma lucidum spore powder, 60-120 parts of cordyceps sinensis, 15-35 parts of astragalus membranaceus, 10-30 parts of liquorice and 10-30 parts of dates. The traditional Chinese medicine composition is good in cancer prevention effect.