Nasal congestion in infants has many causes, generally considered to be respiratory tract infections, allergic diseases or nasal septum deviation, adenoid hypertrophy and nasal polyps and other ophthalmologic diseases, causing nasal congestion causes more, different causes are treated differently. First of all, common in the upper respiratory tract infections, such as cold and flu, mainly due to infection of rhinovirus, adenovirus, etc., usually in addition to nasal congestion, but also with snot and cough fever and other symptoms, the general treatment is recommended to pay attention to rest and keep warm, in addition to the more serious can be taken to anti-infective and anti-viral and other symptomatic treatment. Secondly, consider allergy factors lead to nasal mucosal congestion and edema caused by increased secretion, generally have a history of allergy, seizures can be accompanied by nasal tinnitus and other discomforts. In this case, it is necessary to take anti-allergy drug treatment such as cetirizine drug treatment (specific medication, please combine with the clinical, subject to the guidance of the doctor’s interview). Pentasal diseases such as deviated nasal septum, adenoid hypertrophy and nasal polyps can also cause nasal congestion. If the symptoms recur, endoscopy and laryngoscopy are recommended, and depending on the actual situation, surgery or conservative treatment should be chosen. In conclusion, the causes of nasal congestion in infants are quite diverse, and if the symptoms are combined, it is recommended to go to the hospital for relevant examinations to clarify the diagnosis and treatment.