The invention provides a Chinese medicinal preparation for treating fatty liver for meeting the safe and efficient requirements of fatty liver treatment. The Chinese medicinal preparation is prepared from the following raw Chinese medicinal materials by weight: 10 to 30 grams of many-flower solomonseal rhizome, 10 to 15 grams of medlar, 12 to 30 grams of Chinese white olive, 6 to 15 grams of figwort, 3 to 6 grams of villous amomum fruit, 12 to 20 grams of pueraria flower, 3 to 6 grams of cardamom, 10 to 15 grams of oriental waterplantain rhizome, 3 to 12 grams of large-headed atractylodes rhizome, 10 to 30 grams of tuckahoe and 10 to 15 grams of agaric. By observing Chinese medicinal symptoms, physical signs, syndrome integrals and liver B ultrasonic image change conditions of 78 cases of a treatment group before and after treatment and evaluating the clinical effect, results show that the total effective rate of the treatment group is obviously superior to that of a control group, and the difference has statistical significance (P is less than 0.05). The Chinese medicinal preparation has good clinical effect of treating the fatty liver.