The invention belongs to the technical field of Chinese medicine, and discloses a traditional Chinese medicine composition for treating adenomyosis and a preparation method of the traditional Chinese medicine composition for treating the adenomyosis. The composition is prepared from the following raw materials: 10 to 20 g of caulis spatholobi, 10 to 20 g of radix astragali seu hedysari, 10 to 20 g of herba patriniae, 10 to 20 g of herba houttuyniae, 10 to 20 g of root of red-rooted salvia, 5 to 15 g of rhizoma smilacis glabrae, 4 to 15 g of radix codonopsis, 4 to 15 g of Chinese yam, 4 to 15 g of Chinese angelica, 4 to 15 g of lightyellow sophora root, 4 to 15 g of scorpions, 4 to 15 g of ground beeltle, 4 to 15 g of rhizoma corydalis, 4 to 15 g of rhizoma sparganii, 4 to 15 g of curcuma zedoary, 4 to 15 g of fructus meliae toosendan, 1 to 5 g of rhizoma zingiberis preparata and 1 to 5 g of cortex cinnamomi. The composition disclosed by the invention has the advantages that the curative effect is positive, the formula and preparation are fixed, and the composition is used conveniently, is unnecessarily increased or decreased in quantity along with symptoms and is free from known toxic and side effects; the problems of big difference of the curative effect, obvious side effect, high cost, recurrence after stopping taking the composition, non-universal applicability and no thoroughness in treatment of the existing technology are solved.