If you want to diagnose diabetes by measuring your blood glucose 2 hours after a meal, you should eat a breakfast with two taels of staple food. If you have already been diagnosed with diabetes, you should eat your normal meals as usual when reviewing your blood glucose, and you do not need to make any deliberate changes. If you want to diagnose diabetes, the food you have to eat 2 hours after meal glucose should ensure two taels of staple food, equivalent to a steamed bun. Timing from the time of eating the first bite, to two hours for blood glucose testing, do not do strenuous activities after eating buns, according to the two-hour postprandial results to help determine whether the postprandial blood glucose is abnormal. If it is diabetic patients test, as usual normal meals, while to eat the appropriate hypoglycemic drugs. Starting with the first bite of the main meal, blood tests are performed two hours later, and the resulting blood glucose values help determine the effectiveness of the treatment to see if the glucose-lowering program needs to be adjusted. Specific tests can be prepared under the direction of your doctor.