Children sleeping nose whistling, indicating that nasal breathing is obstructed, may be rhinitis – sinusitis, adenoid hypertrophy, nasal foreign body and other causes. 1. Rhinitis sinusitis: when a child suffers from rhinitis sinusitis, it will cause the nasal mucosa to become congested, swollen and increase secretions, which will lead to obstructed breathing and nasal congestion. 2. Adenoid hypertrophy: adenoids pathologically proliferate due to repeated stimulation of inflammation, hypertrophied adenoids block the posterior nostrils, poor ventilation. 3. Nasal foreign body: children naughty foreign body stuffed into the nasal cavity, due to poor nasal ventilation, nasal odor. Children sleeping nose whistling, parents are advised to take children to the hospital in time to check, and follow the doctor’s instructions for standardized treatment.