There is no specific clinical recommendation that bitter melon should not be consumed at night; it is generally allowed. Bitter melon contains a lot of nutrients that can replenish the body’s nutritional needs and is good for the body in moderation throughout the day. Bitter melon contains more protein, dietary fiber, vitamins, calcium, iron and other substances, and has the function of clearing heat, quenching summer heat and thirst, clearing the liver and brightening the eyes, and because bitter melon is rich in bitter elements, it can strengthen the stomach and appetite. Bitter melon also contains more dietary fiber, which can stimulate gastrointestinal motility and enhance digestion after consumption. Bitter melon is low in calories and can reduce the absorption of fat and polysaccharides, so it is suitable for people who want to lose weight and do not have to worry about eating bitter melon at night to make them fat. However, it should be noted that bitter melon contains more oxalic acid, so it needs to be blanched before consumption, otherwise oxalic acid will easily combine with calcium to form precipitates, affecting the absorption of calcium, causing calcium deficiency and easily causing stones. Bitter melon is also cold in nature, so it is not suitable for people with cold stomach and body weakness. It can easily stimulate the stomach and intestines, aggravate stomach discomfort, cause abdominal pain, diarrhea, and aggravate the symptoms of body weakness, such as cold extremities, cold abdomen, etc. In addition, women in pregnancy, children with sensitive stomach and intestines or the elderly are not recommended to eat bitter melon.