The invention discloses a traditional Chinese medicine composition for treating non-alcoholic fatty liver disease. The traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: corydalis saxicola, rhizoma picrorhizae, pseudo-ginseng, radix salviae miltiorrhizae, kudzuvine root, rhizoma atractylodis macrocephalae, radix paeoniae alba, tuckahoe, radix bupleuri, angelica, lotus leaves, semen coicis, chinese waxgourd semen, reed rhizome, platycodon grandiflorus, semen lepidii, loquat leaves, fritillaria cirrhosa, fructus lycii, semen cassia, rhizoma alismatis, peach kernel and mulberry leaves. Pharmacological experiments prove that the traditional Chinese medicine composition is capable of preventing insulin resistance, improving insulin sensitivity, reducing blood fat, inhibiting inflammatory reaction, improving abnormal glucolipid metabolism, reducing hepatocyte fat deposition, improving liver function, decreasing liver indexes and having obvious treatment effects on a rat suffering from non-alcoholic fatty liver disease.