This study is intended to include 3000 diabetic patients in our hospital to collect complete medical history data, comprehensively improve the screening of diabetic complications and cardiovascular and cerebrovascular risk assessment.

With the economic development and lifestyle change, the incidence and prevalence of diabetes are increasing year by year in both China and the world. Diabetics are associated with a significantly increased risk of cardiovascular and cerebrovascular disease.

It is a cross-sectional study. This study intended to include about 3000 adult patients with previously diagnosed diabetes mellitus, then collect their anthropometric data (age, gender, weight, height, waist circumference, hip circumference and etc.), life history (diet, exercise, smoking, drinking and etc.), medical history, familial medical history, clinical testing results about their diabetes complication, and make a comprehensive assessment of their cardiovascular and cerebrovascular risks. These data will be used to make further research about the diabetes complication and cardiovascular and cerebrovascular disease.

Inclusion Criteria:

• Diabetic symptoms with: plasma glucose level at any time ≥11.1mmol/ L (200mg/ dL), or Fasting plasma glucose level ≥7.0mmol/ L (126mg/ dL), or plasma glucose level ≥11.1mmol/ L (200ng/ dL) for 2 h in OGTT test, or HbA1c ≥6.5%; Or those without typical symptoms should repeated the tests in another day.
• Han Chinese.
• Willingness to participate.

Exclusion Criteria:

• Secondary diabetes.
• Participants in other clinical trials.

patients with diagnosis of diabetes mellitus