糖尿病是由遗传和环境因素相互作用而引起的一组以慢性血糖水平增高为特征的代谢紊乱性疾病[1]。糖尿病易感染,而感染是造成糖尿病患者死亡的重要原因之一。虽然胰岛素和抗生素的应用使糖尿病合并感染的病死率有所下降,但肺部感染病情复杂、预后差,易导致呼吸、循环功能障碍等? Diabetes mellitus is a group of metabolic disorder characterized by the interaction of genetic and environmental factors characterized by an increase in chronic blood glucose levels [1]. Diabetes is easily infected, and infection is one of the important causes of death of diabetic patients. Although the application of insulin and antibiotics in diabetic patients with infection mortality decreased, but the complex lung disease, the prognosis is poor, easily lead to breathing, circulatory dysfunction, etc.?