The invention provides Chinese medicinal composition for treating abnormal menstruation and a preparation method thereof. The Chinese medicinal composition comprises the following components in percentage by
mass: 7-9% of longan pulp, 19-21% of
semen ziziphi spinosae, 3-5% of fructus rubi, 6-8% of rhizoma polygonati, 6-8% of fructus mori, 6-8% of
flos sophorae immaturus, 4-6% of fructus jujubae, 7-9% of rhizoma dioscoreae, 3-5% of
semen persicae, 6-8% of
semen sesami nigrum, 3-5% of semen nelumbinis, 3-5% of fructus mume, 1-3% of rhizoma zingiberis, 6-8% of radix angelicae sinensis, 1-3% of cortex cinnamomi and 4-6% of radix glycyrrhizae. The components are mixed and decocted with water to form paste, and then the paste,
maltodextrin and
potassium sorbate are mixed, granulated, dried and sterilized to obtain the Chinese medicinal composition. The Chinese medicinal composition has the effects of enriching blood, promoting
blood flow, boosting qi, nourishing yin, invigorating
spleen, replenishing qi, harmonizing the
spleen and
stomach and harmonizing qi and blood, and has a good
treatment effect on menstrual volume increase, menstrual
volume reduction and menstrual stomachache.