Since the baby’s thermoregulatory center is not very well developed, the nasal mucosa is tender and weak, and the respiratory tract is poorly defended, it is easy to catch a cold. Subsequently, acute edema of the nasal mucosa occurs, causing nasal congestion. Performance: nasal congestion and runny nose, slightly red on both sides of the nose, some accompanied by fever. Prevention and treatment measures 1, about half a month after birth, the baby began to supplement the appropriate amount of cod liver oil; 6 months to add supplementary food, supplement vitamin A, can feed some liver puree, carrot puree, vegetable puree, enhance the respiratory tract defense ability. 2, the use of air conditioning, indoor and outdoor temperature should not be too big a contrast, the baby room to about 28 to 30 degrees Celsius is appropriate. 3.Put a warm wet towel on the baby’s nose for hot compresses (not too hot) twice a day for about 15 minutes each time.