2 years old baby’s nose is not ventilated, according to the cause of the corresponding treatment, there are usually the following cases: First, nasal secretions increased, nasal mucosa congestion, causing the nose is not ventilated, you can give the child with saline nasal spray to clean nasal secretions, can be cleaned 3-4 times a day. Secondly, some children have recurrent episodes of nasal disinflation or long duration related to allergies, you can give your child anti-allergy drugs, such as cetirizine hydrochloride or loratadine, etc. At the same time, actively look for allergens, avoid intake of allergy-prone food, and avoid entering the allergy-prone environment. Third, some of the baby’s nose is not ventilated especially acute attacks, often due to respiratory viral infection, so should be antiviral treatment, you can use interferon spray or ribavirin spray, local spray oral, throat, nasal antiviral treatment, you can also take oral antiviral oral liquid and other Chinese medicine antiviral treatment.