The screening and diagnosis of diabetes should remember “5678”, which means as long as the fasting blood sugar is higher than 5.6mmol/L and the postprandial blood sugar is higher than 7.8mmol/L, the screening of diabetes should be performed. There are “five horses” for the treatment of diabetes, namely diet, exercise, diabetes education, blood glucose monitoring, and medication. Through the “five horses”, diabetic patients can achieve fasting blood sugar: 6mmol/L, glycated hemoglobin: 7%, and postprandial blood sugar: 8mmol/L.