Eating lychee does not play a role in lowering blood sugar. Lychee is a common fruit, with dietary fiber, carotene, vitamin C, folic acid, potassium, phosphorus, magnesium, zinc and other nutrients, both healthy people and diabetic patients can eat lychee, help to supplement the nutrients. But lychee can not play a role in lowering blood sugar, and lychee glycemic index is higher in the fruit, a large number of one-time eating is not conducive to blood sugar control. Diabetic patients should be treated with appropriate physical exercise, good dietary control and the use of hypoglycemic drugs such as metformin and glipizide under the guidance of a doctor in order to lower blood sugar. Diabetic patients should be treated under the guidance of a doctor, food alone can not play a role in lowering blood sugar, need to take a scientific approach to treatment, so as not to delay the condition.