Can overnight watermelon eat depends on the storage method, if it is stored at room temperature is recommended not to eat again, because it is easy to breed bacteria, may have been corrupted. If it is refrigerated and preserved with clean plastic wrap intact, it can be eaten overnight, although it is generally not recommended that you eat overnight food. Watermelon is a seasonal fruit in summer, a large number of watermelons will be ripe and picked in the summer, frozen watermelon taste better. Because of the large size of watermelon, if you do not finish it after you buy it, you can store it in the refrigerator. Summer bacteria reproduction is faster, so cut the watermelon in room temperature environment for up to 6 hours, cut in time to put on plastic wrap in the refrigerator after storage time is longer. If you don’t wrap the watermelon with plastic wrap and put it in the refrigerator, the sugar and rich nutrition contained in the watermelon will accelerate the reproduction of bacteria. The consumption of these watermelon containing a large number of bacteria, the lighter will cause gastroenteritis, abdominal pain, diarrhea and other symptoms, the heavier may appear poisoning phenomenon. If these symptoms occur after consuming watermelon, you need to go to the hospital in time to seek medical attention and develop a treatment plan according to the test results and the patient’s condition, such as correcting electrolyte disorders and maintaining blood volume.