The best time to eat oranges is usually about half an hour after a meal. Oranges contain a large amount of vitamins, folic acid, fruit acids and minerals and other nutrients, and are low in sugar. Rich in vitamin C, it can strengthen the body’s resistance, expel fat-soluble harmful substances from the body, and is a better antioxidant, which is beneficial to human health. The vitamin C, folic acid and fruit acid in oranges are all acidic substances, and the combination with stomach acid after eating greatly increases the acidic environment in the stomach, which may lead to damage to the gastric mucosa and acute gastritis, peptic ulcer and other diseases, so it is recommended to eat about half an hour after meals. In addition, when eating oranges should also be noted that they should not be taken with milk, so as to avoid the formation of clots in the stomach, increasing the digestive burden of the stomach, resulting in bloating, abdominal pain and other symptoms of indigestion; at the same time, people with peptic ulcers should not eat oranges, because oranges can aggravate the development of ulcers.