You can eat apples at night, but in moderation. Apples are a healthy fruit rich in vitamin C. Vitamin C is an essential vitamin and has antioxidant properties. Apples contain a lot of sugar as well as fiber. Fiber promotes gastrointestinal peristalsis, thus helping to laxative, prevent or relieve constipation. Apples also contain a large amount of organic acids and pectin, which can promote the secretion of saliva and gastric acid and regulate intestinal flora. Apples are lower in calories and more satiating, and are also suitable for people who are trying to lose weight. In general, you can eat apples at night, but in moderation, so as not to eat too many apples at night, causing indigestion, bloating, belching, acid reflux and other discomforts.