The invention belongs to the technical field of food, and particularly relates to a Chinese medicinal composition for treating diabetes. The Chinese medicinal composition is prepared from rhizoma dioscoreae, bombyx batryticatus, radix astragali seu hedysari, poria cocos, endothelium corneum gigeriae galli, radix scutellariae, pollen typhae, herba circii aponici, flos sophorae, radix panacis quinquefolii, cornu bubali, rhizoma polygonati, radix aconiti carmichaeli, rhizoma chuanxiong, radix salviae miltiorrhizae, radix paeoniae alba, pberetima, radix notoginseng, cortex cinnamomi, rhizoma polygonati odorati, cortex eucommiae, radix ophiopogonis, rhizoma gastrodiae, herba dendrobii and trypsin. The Chinese medicinal composition for treating diabetes, which is disclosed by the invention, notonly can have an obvious effect of reducing fasting blood glucose, an area under the curve of blood glucose and indexes of cholesterol and triglyceride of a patient with the II type diabetes, is equivalent to a positive drug group in effect and is slightly superior to the positive drug group in partial index. Moreover, by a syndrome differentiation and treatment method and through adopting comprehensive measures, clinical symptoms of patients with diabetes are relieved, various complications of the diabetes are prevented and treated, a treatment effect is obvious, and the Chinese medicinal composition can implement treatment on both symptoms and root causes, is safe and reliable and has no any toxic or side effect.