Infants refer to babies under one year old. At this age, the baby’s resistance is relatively poor, especially prone to acute upper respiratory tract infections, which is what we usually call a cold, and the baby is particularly prone to nasal congestion after a cold, and severe nasal congestion can also lead to irritability and crying, thus affecting the appetite of the child. We all know that the nose, that is, the nasal cavity belongs to the upper respiratory tract, the cold refers to the infection of the upper respiratory tract, mainly the nose, nasopharynx and pharynx mucous membrane inflammation, and nasal congestion is a local symptom of the cold, infants have a cold nasal congestion is particularly serious, this is mainly because infants do not have nasal hair, the nasal mucosa is a relatively smooth condition, while the nasal cavity is narrow, the mucous membrane is tender, rich in blood vessels and lymphatic vessels, especially When a child has a cold, that is, a viral infection, the mucous membrane of the nasal cavity becomes congested and swollen, and the secretion increases, it is especially easy to block the nasal cavity and cause nasal congestion, and in serious cases, there will be difficulty in breathing and feeding. So when your baby has a cold, it is very important to actively relieve nasal congestion. The nasal congestion of infants after a cold is a local symptom of the cold, we understand the cause of nasal congestion, so when the child has nasal congestion, drink more water, use warm towels to warm the root of the nose or rinse the nasal cavity with physiological sea salt water can effectively relieve the nasal congestion caused by the cold.