The invention provides a Chinese medicinal preparation for treating diabetes, which is prepared from heterophylly falsestarwort root, gypsum, Indian buead, pollen, dwarf lilyturf tuber, cochinchnese asparagus root, chicken gizzard-membrane, tortoise plastron, dendrobium, turtle shell, medlar, cinnamomvine, common macrocarpium fruit, villous amomum fruit, root of rehmannia, Chinese magnoliavine fruit, dark plum fruit, pangolin, root of straight ladybell, fragrant solomonseal rhizome, common anemarrhena rhizome, dragon's bones and oyster shell according to a conventional Chinese medicament preparation process. The preparation is a pure Chinese medicinal preparation, is used for the treatment of the diabetes and complicating diseases thereof, and has the advantages of having steady therapeutic effect, having no toxic side effect, adjusting the environment in organisms, improving the constitution, relieving the state of insulin resistance, adjusting glycolipid metabolism, strengthening glucose homeostasis and the like.