Children with blocked nose and no ventilation consider nasal congestion, which has more causes, common causes of nasal congestion such as: upper respiratory tract infections, rhinitis, nasal deformity, nasal foreign body, and so on. According to the cause of the disease, targeted treatment, such as drug treatment, surgical treatment. 1. Upper respiratory tract infection: most of the upper respiratory tract infections caused by viruses, for upper respiratory tract infections caused by influenza virus, you can use oseltamivir and other drugs to fight infection. If it is caused by bacterial infection, you can use amoxicillin and other drugs for anti-infection treatment. Nasal ventilation will also improve after the infection is controlled. 2. Rhinitis: including infection, allergy and other causes of rhinitis, if the bacterial infection caused by rhinitis can be used to treat roxithromycin and other drugs, if it is caused by allergies caused by rhinitis, can be used to use cetirizine hydrochloride and other drugs anti-allergy, at the same time, can be used to physiological sea saline rinse nasal cavity, to improve the symptoms. 3. Nasal deformity: generally congenital nasal congestion caused by missing nose, small nose, atresia or adhesion of the anterior nostrils. This condition usually requires surgical treatment. 4. Intra-nasal foreign body: it occurs in children, and most of them have nasal congestion in one nostril, which may be bloody. After nasal examination, the foreign body can be seen. Most of them are caused by children’s playfulness. This situation should be brought to the hospital in time to remove the foreign body. There are many causes of nasal congestion in children, and it is necessary to clarify the cause of nasal congestion in order to target treatment. It is recommended to go to the hospital in time, and if you need to use drugs, you need to use them under the guidance of a doctor.