The invention discloses a traditional Chinese medicine composition for treating acute mastitis. The composition is prepared from the following raw materials in parts by weight: 20 to 25 parts of chrysanthemum, 8 to 10 parts of hypericum japonicum, 4 to 6 parts of akebiaquinata, 2 to 4 parts of hibiscus mutabilis, 5 to 7 parts of licorice root, 2 to 3 parts of beautiful sweetgum fruit, 1 to 3 parts of radix bupleuri, 3 to 5 parts of myrrh, 2 to 4 parts of angelica sinensis, 5 to 7 parts of portulaca oleracea, 3 to 5 parts of scutellaria baicalensis, 2 to 4 parts of the root of red-rooted salvia, 4 to 6 parts of rhizoma atractylodis macrocephalae, 2 to 4 parts of stigma of corn, 4 to 6 parts of Chinese violet, 3 to 5 parts of dianthus superbus, 1 to 3 parts of rhizoma acori graminei, 2 to 4 parts of the seed of cowherb, 1 to 2 parts of lactuca indica, 5 to 7 parts of dandelion, 3 to 4 parts of memorialis hirta, 1 to 2 parts of gymnema sylvestre schult and 1 to 2 parts of ludwigia repens. The composition prepared by the traditional Chinese medicines in a reasonable matching manner has the effects of removing heat to cool blood, dredging the channel to expel milk, diminishing inflammation to remove pus, clearing away heat and toxic materials, promoting blood circulation to remove blood stasis, activating meridians to stop pain and the like. The composition has the characteristics of obvious treatment effect, high cure rate, no relapse, low treatment cost, small toxic and side effect and the like, and is convenient to take.