A 1-month-old baby with severe nasal congestion can be treated at home first, such as using a warm towel on both sides of the baby’s nose to see if the nasal congestion can be relieved. You can also massage both sides of your baby’s nose properly, which can promote the solution of nasal congestion. You can also go to the pharmacy to buy saline nasal spray to clean the baby’s nasal secretions, which can be cleaned 2-4 times a day. If after this treatment, the problem of nasal congestion is solved, it does not matter. Of course, there are a small number of babies with severe nasal congestion caused by cold respiratory virus infection, you can also use local interferon spray to antiviral treatment. Some children may have severe nasal congestion with the involvement of allergic factors, should avoid the child into the allergy-prone environment, you can take appropriate anti-allergy drugs, such as cetirizine hydrochloride drops and so on. If the above treatment still does not provide relief, you should go to the ENT clinic or pediatric emergency room as soon as possible.