The invention discloses a traditional Chinese medicine composition suitable for treating Type II diabetes, wherein the traditional Chinese medicine composition is prepared by the following ingredients in parts by weight: 20 to 24 parts of root of rehmannia, 20 to 30 parts of Astragalus mongholicus, 24 to 30 parts of Chinese yam, 12 to 18 parts of rhizome anemarrhenae, 12 to 18 parts of radices trichosanthe, 12 to 15 parts of radix polygonati officinalis, 12 to 15 parts of radix puerariae, 15 to 20 parts of endothelium corneum gigeriae galli, 9 to 15 parts of Schisandra chinesis, 10 parts of cordyceps sinensis, and 10 parts of American ginseng. The test shows that the medicine composition of the invention develops an approach to prepare novel medicines for curing the Type II diabetes.