The present invention provides a pharmaceutical composition for treating diabetes consisting essentially ofRamulus Cinnamomi, Radix et Rhizoma Rhei, Semen Persicae, Radix Rhizoma Glycyrrhizae,andCordyceps.The present invention also provides a use of a composition consisting essentially ofRamulus Cinnamomi, Radix et Rhizoma Rhei, Semen Persicae, Radix Rhizoma Glycyrrhizae,andCordyceps,for manufacturing a pharmaceutical composition for treating diabetes Type II.本發明係提供一種治療糖尿病之醫藥組合物,其係由下列成分所組成:桂枝(Ramulus Cinnamomi)、大黃(Radix et Rhizoma Rhei)、桃仁(Semen Persicae)、甘草(Radix Rhizoma Glycyrrhizae)、以及冬蟲夏草(Cordyceps)。本發明另提供一種製備治療糖尿病之醫藥組合物之用途。