The common causes of nasal congestion in children while sleeping are chronic rhinitis, allergic rhinitis, turbinate hypertrophy and other diseases. It is best to go to the hospital to improve the rhinoscopy to confirm the cause, and then treat the symptoms. Common causes and treatments: 1, chronic rhinitis: nasal congestion, runny nose, pharyngeal discomfort as the main symptoms, you can choose saline or special nasal rinse to clean the nasal cavity, can effectively relieve the symptoms of nasal congestion in babies, or the application of budesonide, fluticasone propionate and other glucocorticoids to improve the symptoms, daily life should pay attention to a nutritionally balanced, easy to digest diet, prohibit spicy, stimulating food; 2 Allergic rhinitis: Allergens in the environment can lead to the triggering of allergic rhinitis, such as pollen, dust, animal dander, etc.. Patients should try to avoid contact with allergens to avoid triggering allergic rhinitis. Children over 6 years old can also use azelastine spray to relieve the symptoms of nasal congestion. 3. turbinate hypertrophy: If you have symptoms of nasal congestion for a long time, consider the presence of turbinate hypertrophy, which needs to be checked and diagnosed by anterior rhinoscopy and nasal endoscopy. If the inferior turbinate is enlarged, mucosal partial inferior turbinate resection can be performed, which can improve ventilation. Note baby nasal congestion when breathing through the mouth may cause dryness in the throat, you can give baby a small amount of water several times to replenish water, help relieve the symptoms of the throat. If your baby has severe nasal congestion, you also need to consider other causes, such as nasal foreign bodies, nasal tumors, etc. You need to seek timely medical attention to identify the cause and treat the cause.