The invention relates to a herbal preparation for treating ascitic type liver cancer, in particular to a secret recipe of the technology of medicinal herbs for treating medium and later-period ascitic type liver cancer, and belongs to the field of the preparation of medicinal herbs for treating the ascitic type liver cancer. According to the unique secret recipe, the herbal preparation for treating the ascitic type liver cancer comprises the following eight medicinal herbs by weight: 20 grams of Chinese lizardtail rhizome or herb, 10 grams of lemon-scented angelica, 15 grams of narrow-leaved rattlebox, 5 grams of langdu root, 10 grams of roegneria thoroldiana, 10 grams of coix seed, 25 grams of carp and 5 grams of ginseng. Medicinal decoction is prepared by optimizing the conventional process, namely a decocting extraction method, and experiment summarization shows that: in the pharmacological action of the decoction, the herbal preparation has the curative effect of inhibiting tumors on mouse liver cancer, the ascitic type liver cancer, S 37 and mouse S-180 by subcutaneous injection of 10 milligrams/time, has the effects of stopping the growth and the hurting effects of liver cancer cells, and inhibits the generation of ascites. By the herbal preparation, 30 patients who suffer from the ascitic type liver cancer are treated, wherein the herbal preparation cures 24 patients and is effectual to 3 patients, namely the total effective rate is 90 percent.