An 8-month-old baby with a stuffy nose and a non-ventilated nose is a symptom of the early stage of a cold. At this time, you should give your baby more water and increase the supply of vitamin C. You can drink vitamin C effervescent tablets or freshly squeezed orange juice to enhance resistance. If you think your baby has a cold caused by wind or cold, you can also take pediatric cold punch, pay attention to keep warm, do not blow, and try to control the spread of respiratory tract infection. When your baby has nasal congestion, first clean up the boogers, increase the humidity of the air, place a humidifier or a few pots of water in the house, or use a hot towel on the root of the nose. Feed your baby more water and keep him warm.