The normal weight range for a full-term newborn is 5-8 pounds, below 5 pounds is a low weight baby, above 8 pounds is a huge baby. Low-weight babies are prone to choking or spitting up during breastfeeding due to immature organ development, insufficient sucking power and poor swallowing function, which may lead to choking in severe cases. Low-weight babies also have underdeveloped stomachs, which have less capacity and digestive enzymes, and poor digestion and absorption ability, so they are less resistant to disease and love to get sick. Huge children are prone to obstructed labor at birth and to hypoglycemia and hypocalcemia after birth, which increases the chances of later intellectual development, adolescent obesity, cardiovascular disease, hyperlipidemia, and diabetes. Therefore, it is recommended that baby mothers should have a reasonable diet during pregnancy, with meat and vegetables, coarse and fine grains, eating less and more meals, avoiding high-fat and high-calorie foods, plus reasonable exercise and regular pregnancy tests to ensure the normal development of the baby.