If the glucose tolerance is found to be high after two hours, you need to look at the value of glucose tolerance two-hour glucose, if the glucose tolerance two-hour glucose is greater than or equal to 11.1 mmol/l and there are typical symptoms of diabetes mellitus, then diabetes mellitus can be diagnosed, and you need to comply with the doctor’s instructions for medication. If fasting blood glucose is less than 7.0mmol/L, but glucose tolerance two-hour blood glucose is greater than or equal to 7.8mmol/L less than 11.1mmol/L, suggesting that the glucose tolerance is reduced, you can control blood glucose through diet and exercise, and then re-tested after 1-3 months, if the blood glucose is still high, then you need to comply with the doctor’s advice to use hypoglycemic drugs. Glucose tolerance can be used to determine whether there is diabetes or not, the specific experimental methods are as follows: fasting is required in the morning of the day of the examination, and fasting venous blood is drawn; the patient is instructed to drink 75 grams of dextrose powder (dissolved in 200-300 ml of water), and finish it within 5 minutes, and the time is counted from the first sip of the sugar water, and the venous blood can be drawn respectively in the time periods of half an hour, one hour, two hours, and three hours after the drinking of the sugar water. Therefore, when the glucose tolerance is found to be high after two hours, if the diagnostic standard of diabetes mellitus has been reached, then start to follow the doctor’s prescription of medication, and do not be negligent so as not to delay the condition.