3-month-old baby cold symptoms, cold at the beginning of the cold can appear sneezing, runny nose, nasal congestion and other phenomena. At this time, you should give your baby more water and vitamin C. You can drink vitamin C effervescent tablets or freshly squeezed orange juice, which can strengthen the resistance. If you think your baby has a cold caused by wind or cold, you can take pediatric cold punch, pay attention to keep warm, do not blow the wind, try to control the spread of respiratory infection. When the baby has nasal congestion, pay attention to clear the boogers, increase the humidity of the air, you can also use a hot towel to compress the root of the nose first, or use furosemide nasal drops a drop. Elevating the head and shoulders while feeding the baby can improve nasal congestion, or you can massage the root of the nose.