1, chronic complications of diabetes is the main cause of death and disability in diabetic patients, the treatment of chronic complications of diabetes has been the focus of diabetes prevention and treatment. 2. Chronic complications of diabetes are divided into three main areas: (1) microangiopathy: mainly diabetic nephropathy, diabetic retinopathy, etc. (2) Macrovascular lesions: mainly cardiovascular lesions (e.g. coronary heart disease, myocardial infarction and cerebral infarction) and peripheral vascular lesions (e.g. lower limb arterial occlusive disease, diabetic foot). (3) Neuropathy: mainly peripheral neuropathy (e.g. peripheral neuritis) and autonomic neuropathy (including diabetic gastroparesis, cardiac autonomic neuropathy, and diabetic impotence, etc.). 3, Western medicine believes that its core is vasculopathy, and progressive narrowing of the vascular lumen is the common pathophysiological basis of various chronic complications of diabetes. In Chinese medicine, it is believed that stagnation of blood vessels is the basic pathogenesis throughout the course of diabetes. 4, treatment measures mainly include two aspects: first, comprehensive regulation: control blood sugar, blood lipids, blood pressure levels to meet the standard; second, Chinese medicine intervention, blood activation, blood stasis and ligament as a basic rule of treatment throughout, before the disease first prevention, both disease and prevention of change.