There are many causes of nasal congestion, including respiratory tract infection or allergic reaction of nasal mucosa causing mucosal congestion and edema, or deviated nasal septum and adenoid hypertrophy, etc. These mild cases can be cured by themselves, but the serious cases need to go to the hospital for regular examination and treatment to get cured or improve the possibility, and in serious cases, surgical treatment is needed. Respiratory infection plays an important role in the symptoms of nasal congestion, performance symptoms in addition to nasal congestion will be accompanied by nasal discharge, sneezing, fever, cough, throat discomfort, rash, etc., if for full-term children, the performance of respiratory infection may not be particularly typical, at the same time so children if there is an infection, because mainly due to viral infection, generally do not need special treatment, you can try hot towels on the nose, and then On the other hand, it is commonly caused by edema of the respiratory mucosa of the nasal tract, which may be related to some operations during the child’s birth, and does not require special treatment and can be observed. In addition, nasal septal deviation, adenoid hypertrophy, nasal polyps and nasal occupational lesions can also cause, but it is still rare for such an old child, and this situation requires surgical correction. In short, there are many reasons for nasal congestion, so we should treat them according to the specific reasons, pay more attention to keep warm, pay attention to protection from external germs and infections, and if necessary, carry out relevant examinations for clear diagnosis and treatment.