Hairy onion is a kind of food, containing certain carbohydrates, proteins, vitamins and minerals and other nutrients, but does not have the efficacy and effect of drugs. Onion is rich in nutrients, high nutritional value, 100g onion contains carbohydrate 4.9g, protein 1.6g, niacin 0.40mg, vitamin C 21.0mg. Onion is rich in minerals, 100g onion contains calcium 72mg, phosphorus 26mg, potassium 143mg, sodium 10.4mg, magnesium 18mg, iron 1.3mg. these nutrients are needed by the human body, eat in moderation, the human body has a certain benefit, the nutritional value of higher. Onion is a kind of food, does not have the efficacy and effect of drugs, it is recommended that the occurrence of uncomfortable symptoms in time to the hospital to avoid delays in the condition. Daily diet also need to pay attention to nutritional balance, light diet.