The term “onion carbohydrates” generally refers to the amount of carbohydrates in onions, with 9.0 grams of carbohydrates per 100 grams of onions, so the amount of carbohydrates in onions is relatively low. In addition to carbohydrates, onions also contain vitamin C, calcium, potassium, phosphorus and other nutrients, per 100 grams of onions contain 8.0 mg of vitamin C, 24 mg of calcium, 147 mg of potassium, 39 mg of phosphorus, appropriate eating onions can supplement the nutrients that the body needs. Specific diet program is recommended to consult a professional nutritionist to develop.