Cucumber is a more suitable food for diabetic patients, belonging to the low glycemic index food, but also can provide water, vitamins, fiber and so on. The glycemic index of cucumber is 15, belonging to the low glycemic index food, moderate consumption will not lead to rapid increase in blood sugar, will not cause dramatic fluctuations in blood sugar, to maintain blood sugar stability is good. Every 100 grams of cucumber produces only about 15 calories, is more suitable for diabetic patients to eat vegetables. Cucumber is rich in water, fiber, vegetable protein, vitamin B, vitamin C, calcium, phosphorus, iron, etc. These nutrients are beneficial to the human body and can be consumed in moderation. Diabetic patients also need to control daily energy intake, nutritional balance with a balanced combination of small meals per day. It is recommended that diabetic patients should rationalize their diets under the guidance of their doctors.