Onions can be combined with common foods, there is no food incompatibility, moderate consumption of onions can provide the body with carbohydrates and other nutrients. Onions are rich in nutrients and can be combined with a variety of foods, such as chicken, potatoes, meat, seafood, etc., will not produce harmful substances to the human body, but rather can increase the diversity of food, good for health. Each 100 grams of onion contains 40 calories, of which 9.34 grams of carbohydrates, 1.1 grams of protein, 0.1 grams of fat, vitamin C7.4 milligrams, 23 milligrams of calcium, 0.21 milligrams of iron. Moderate consumption of onions can provide the body with a variety of nutrients, which is beneficial to health and helps maintain the normal functioning of the body. Due to the high dietary fiber content of onions, excessive consumption is prone to increased gas production, while increasing the possibility of abdominal bloating, abdominal pain, so it is recommended to eat in moderation. Patients with gastrointestinal disorders, such as gastric ulcers, gastritis, duodenal ulcers and other patients, it is recommended to consume fully cooked onions, it is not recommended to consume raw onions, so as not to aggravate the symptoms of gastrointestinal tract irritation.