Eating too much watermelon for normal people can appear bloating, for normal people may be relieved after rest, and does not cause harm, but for diabetes, renal dysfunction of the disease population may aggravate the condition. Watermelon is rich in water, but also contains glucose, vitamin A and calcium and other minerals, moderate consumption can be supplemented with water and nutrients. Each 100 grams of watermelon contains 26 calories, of which 5.8 grams of carbohydrates, 0.1 grams of fat, 0.6 grams of protein, 0.3 grams of dietary fiber, 75 micrograms of vitamin A, 87 milligrams of potassium and 8 milligrams of calcium. But consume too much, the first stomach bloating, if normal people after rest, water into the intestine is absorbed, stomach bloating can gradually improve. If there is diabetes, it can cause elevated blood sugar, which has adverse effects on the body. If the renal function is not compensated, it will increase the burden on the kidneys, leading to water retention to make edema worse. Therefore, it is recommended that watermelon be consumed in moderation, and watermelon should be consumed together with other foods to achieve a balanced diet.