The main components of cucumber are water, vitamins, proteins and other substances, which do not contain blood sugar-lowering components, so eating cucumber can not achieve the effect of lowering blood sugar. However, due to the low-sugar characteristics of cucumber, consumption can indirectly play a role in blood sugar regulation. Cucumber contains a large amount of dietary fiber, diabetic patients eat, intestinal peristalsis increased, can reduce the food in the intestinal tract to stay and nutrient absorption, and then play a role in regulating blood sugar. In addition, diabetic patients will have a sense of satiety after eating cucumber, can reduce the intake of other foods, indirectly play a role in controlling blood sugar. If the diabetic patient’s blood glucose control is not up to standard, it is not recommended that the patient eat fruits with high sugar content, such as bananas, peaches, mangoes, etc., and can eat foods with low glycemic index, such as tomatoes, oilseed rape, oleaginous vegetables, winter melon, eggplants, cucumbers and so on. In addition, diabetic patients also need to increase a certain amount of exercise in moderation according to their own situation, in order to increase the sensitivity of peripheral tissues to insulin, which is conducive to the control of blood glucose.