In general, the child sleeps with his mouth closed snoring consider sleeping posture abnormal does not matter, consider the respiratory tract obstruction: such as adenoid hypertrophy, tonsils, pharyngeal inflammation and other conditions, need to consult a doctor in time. 1. incorrect sleeping posture: is the main reason why children appear to sleep with their mouths closed snoring problem, fall asleep tongue muscle relaxation, therefore, under the effect of gravity leads to the throat ventilation state is blocked, and then appear snoring, can be solved by improving the sleeping posture, such as letting the child sleep on his side. 2. Respiratory tract obstruction: if the child has adenoid hypertrophy, tonsil hypertrophy, resulting in respiratory tract obstruction, may be manifested as sleeping with the mouth closed snoring, may also be due to inflammation of the pharynx, it is recommended to the hospital for examination, under the guidance of the doctor targeted treatment. Usually, children appear to sleep with their mouths closed snoring, parents do not have to worry too much, usually does not matter, most of them are due to incorrect sleeping position, you can change the sleeping position, close observation. Some children may be due to tonsil hypertrophy, pharyngeal inflammation caused by the need for timely medical treatment, targeted treatment.