The importance of 1-hour postprandial blood glucose is different for different people. For the general population, blood glucose testing is usually based on fasting blood glucose and 2-hour postprandial blood glucose, so 1-hour postprandial blood glucose is not very important. However, for the diagnosis of gestational diabetes, it is not only necessary to understand fasting blood glucose and 2-hour postprandial blood glucose, but also focus on 1-hour postprandial blood glucose, so this value is more important for women in pregnancy. 1. General population: For the general population to diagnose diabetes, 1-hour postprandial blood glucose is not very important, because the diagnosis of diabetes is based on the values of fasting blood glucose and 2-hour postprandial blood glucose as the standard. The normal range of fasting blood glucose is 3.9-6.1mmol/L, and if it is ≥7.0mmol/L, it can be diagnosed as diabetes. The normal range of postprandial 2-hour blood glucose <7.8mmol/L, and if the postprandial 2-hour blood glucose is ≥11.1mmol/L, diabetes can also be diagnosed. The first diagnosis of non-gestational diabetes and the diagnosis of diabetes in general adolescents are not based on the 1-hour postprandial blood glucose as the diagnostic criterion; 2. Pregnant women: For pregnant women, the 1-hour postprandial blood glucose is more important. Because in the diagnosis process of gestational diabetes, it is necessary to grasp the fasting blood glucose value, the 1 hour postprandial and 2 hours postprandial blood glucose values. Under normal circumstances, fasting blood glucose <5.1mmol/L, 1 hour postprandial blood glucose <10.0mmol/L and 2 hours postprandial blood glucose <8.5mmol/L. If any of the above items exceeds the normal range, gestational diabetes can be diagnosed, so the 1 hour postprandial blood glucose value is important for gestational women.