Whether you can eat watermelon after fall varies from person to person. Watermelon is rich in glucose, fructose, amino acids and vitamin C, and does not contain fat and cholesterol, is one of the favorite fruits. Watermelon is cold, and the weather gradually turns cool after the fall, excessive cold stimulation will weaken the stomach peristalsis, affecting gastrointestinal function. Especially diarrhea, poor gastrointestinal function, cold body and pregnant women, infants and young children, it is not recommended to eat watermelon after the fall, especially should not eat refrigerated watermelon, so as not to aggravate the symptoms of discomfort or induced diarrhea and other gastrointestinal discomforts. In addition, chronic kidney disease, congestive heart failure, consume too much watermelon, the body water suddenly increased, may aggravate the burden on the heart, kidneys. Patients with high blood sugar, consuming too much watermelon, may lead to a sudden increase in blood sugar. Therefore, for patients with chronic kidney disease, congestive heart failure and high blood sugar, no matter which season it is, they should not eat too much watermelon as they wish, so as not to cause discomfort. People with strong spleen and stomach functions, hot body, and relatively good health, can eat some watermelon in moderation after the fall, but be careful not to overdo it. When eating watermelon should pay attention to the selection, after the fall most of the watermelon began to strike the garden, except for late-maturing varieties. The last crop of common watermelon varieties is usually smaller in size and has a poor taste, some with a sour flavor. Selection of watermelon, you should avoid choosing the last crop of watermelon, you can choose the late-maturing varieties, so that the watermelon taste is more sweet, taste better, moderate consumption can be supplemented with nutrients and so on.