Fasting blood glucose 6.5mmol/L, at this time do not panic, it is recommended to review again and do OGTT test and glycosylated hemoglobin test to further understand the presence of diabetes. Fasting blood glucose 6.5mmol/L is only used as a diagnosis of impaired fasting blood glucose and does not reach the diagnosis of diabetes mellitus. If both fasting blood glucose are greater than or equal to 7.0mmol/L, diabetes is considered, but a glucose tolerance test and postprandial glucose test are still recommended to further confirm the diagnosis. Fasting blood glucose 6.5mmol/L indicates impaired fasting blood glucose. What needs to be done is to raise awareness, control diet, especially low sugar diet, not to eat sweet food, such as sweet fruits and drinks, not to eat too much, too full as well as eating high fat food. Strengthen physical exercise, monitor blood sugar from time to time, control diet, reduce calorie intake and keep a good mood.