Litchi kernel eat a few days to lower blood sugar are not effective, the general consumption of food is not therapeutic effect on lowering blood sugar. Litchi kernel is the mature seed of litchi, litchi kernel is rich in total flavonoids, saponins, a-methylenecyclopropylglycine and tannin, etc., with the nutrients needed by the human body. However, there is no research to show that lychee kernel is useful for lowering blood sugar, so do not blindly listen to some of the recipes to lower blood sugar. Diabetes is a metabolic disease, mainly characterized by elevated blood sugar. Diabetic patients should pay attention to avoid the intake of high-calorie and high-sugar food. Diabetic patients should be reasonable collocation, light diet, small meals, appropriate exercise, follow the doctor’s instructions to standardize the reasonable use of drugs such as taking metformin, acarbose and other drugs, help better control of blood glucose. Daily life to monitor the blood glucose value, always observe the changes in the condition, if any discomfort in a timely manner to seek medical treatment, so as to avoid delays in the condition.