The invention provides a preparation method of a pharmaceutical composition for treating
adenomyosis. The preparation method comprises the following steps: a, weighing the following
raw material medicines in parts by weight: 25-35 parts of sculellaria barbata, 25-35 parts of
oldenlandia diffusa, 5-15 parts of spina gleditsiae, 10-20 parts of
curcuma zedoary, 5-15 parts of ground beeltle, 10-20 parts of rhizoma curculiginis, 10-20 parts of
epimedium and 15-25 parts of
polyporus umbellatus; b, extracting spina gleditsiae,
curcuma zedoary,
oldenlandia diffusa and sculellaria barbata by C, extracting rhizoma curculiginis, herba epimedii, ground beetles and
polyporus umbellatus with water; and d, combining the extracts in the steps b and c, concentrating, and adding pharmaceutically acceptable auxiliary materials or auxiliary components to prepare a pharmaceutically common preparation. Pharmacodynamic studies prove that the pharmaceutical composition can obviously improve uterine injury of experimental
adenomyosis rats, and the pharmaceutical effect of the pharmaceutical composition is better than that of a
traditional Chinese medicine clinical conventional water decoction preparation under the condition of equal dosage or 1 / 2 dosage, so that the pharmaceutical composition prepared by the innovative preparation method has better pharmaceutical effect than that of clinical water decoction, and the pharmaceutical composition is suitable for clinical application. The compound has remarkable application potential in preparation of drugs or hospital preparations.