Children snoring at night may be related to physiological factors, or may be caused by enlarged tonsils or adenoids, allergic rhinitis, colds and other causes. 1. Physiological factors: for example, children sleeping in an incorrect position at night, too high a pillow, etc., are prone to lead to the airway is not smooth, there may be the phenomenon of night snoring. 2. Enlarged tonsils or adenoids: If a child has enlarged tonsils or adenoids, resulting in significant resistance to the airway, he or she may snore at night. 3. Allergic rhinitis: when allergic rhinitis attacks, under the stimulation of inflammation, resulting in nasal mucosa congestion, edema, resulting in the formation of nasal resistance to the respiratory tract, which may cause the child snoring at night. 4. Colds: If a child suffers from colds and flu, leading to poor nasal ventilation, resulting in increased resistance to the respiratory tract, it may cause the child to snore at night. Children snoring at night, may also be caused by other reasons, ruled out physiological factors, it is recommended to seek medical advice as soon as possible, diagnose the cause, give targeted treatment.