随着人们生活水平的提高,生活方式及饮食结构的改变,糖尿病的患病率逐年上升,特别是老年糖尿病患者的患病率逐年上升,估计到2010年我国糖尿病发病人数将达到6000万〔1〕。糖尿病的各种急、慢性并发症也逐年上升,糖尿病已成为严重危害人们健康的常见病,其患病率、致残率、病死率 With the improvement of people’s living standards, lifestyle and diet changes, the prevalence of diabetes increased year by year, especially the prevalence of elderly diabetic patients increased year by year, it is estimated that by 2010 the number of diabetic patients in China will reach 60 million [1 ]. Diabetes, a variety of acute and chronic complications have also increased year by year, diabetes has become a serious risk to people’s health, the prevalence of morbidity, disability, mortality