The invention relates to a Chinese herbal medicine composition for treating clinical mastitis. The composition is prepared from dandelion, double blossom, scutellaria baicalensis, isatis root, salviae miltiorrhizae, Chinese angelica, fructus forsythiae, angelica root, radices trichosanthis, liquorice, dried tangerine or orange peel, frankincense, myrrh, red paeony root, divaricate saposhnikovia root, scallop with shell, pangolin scales, bunge corydalis herb and cortex moutan, and the fine powder is taken once. The Chinese herbal medicine composition is mainly used for treating clinical dairy cow mastitis with symptoms such as breast enlargement, red and swollen heat pain, unwillingness of lying down, reduction of milk yield, degenerated milk with light brown or yellowish-brown color, even white flocculus in milk and milk with blood streak. Moreover, compared with the traditional antibiotics, the Chinese herbal medicine composition has the advantages that the treatment effect is superior to that of the antibiotics, and the effect of promoting the milk yield of dairy cows is obvious.