The invention relates to the technical field of Chinese medicines, and in particular discloses a Chinese medicinal composition for treating hepatitis and a preparation method thereof. The Chinese medicinal composition for treating hepatitis is prepared from the following Chinese herbal medicines in part by weight: 100 to 140 parts of red paeony root, 50 to 70 parts of corydalis tuber, 50 to 70 parts of tuckahoe, 50 to 70 parts of Chinese thorowax root, 50 to 70 parts of oyster, 50 to 70 parts of dried orange peel, 50 to 70 parts of scorched fructus crataegi, 100 to 140 parts of red-rooted salvia root, 50 to 70 parts of large-head atractylodes rhizome, 50 to 70 parts of umbellate pore fungus, 50 to 70 parts of bitter orange, 50 to 70 parts of tree peony bark and 50 to 70 parts of scorched malt. The Chinese medicinal composition for treating hepatitis is reasonable in formula and reliable in curative effect, can be used for effectively treating chronic hepatitis and liver cirrhosis, and has the advantages of obvious therapeutic effect and small side effect.