Adenoid hypertrophy may be caused by repeated inflammation of the adenoids or sinusitis, tonsillitis, etc. The child’s adenoid hypertrophy sleeps with his mouth open, which can be improved by adjusting the sleeping position, medication to treat the primary disease, and surgical treatment. 1. Adjustment of sleeping position: children with adenoid hypertrophy, when sleeping on the back, the root of the tongue will usually fall back by gravity, resulting in the narrowing of the pharyngeal cavity, and thus open-mouthed sleep, so it is recommended that the child sleeps on the side of the sleep position, which may be able to get a certain effect of improvement. 2. medication: the child adenoid hypertrophy open mouth sleep, need to clarify the cause of the disease, the treatment of the primary disease to improve, such as sinusitis caused by adenoid hypertrophy, can follow the doctor’s instructions to use mometasone furoate nasal spray to reduce the inflammatory response. 3. Surgery: If the child adenoid hypertrophy, there are surgical indications, need to consider surgical treatment. If your child’s adenoids are enlarged and he sleeps with his mouth open, it is recommended that you consult a doctor in a timely manner, actively cooperate with the doctor to carry out the relevant treatments and therapies, and do regular rehabilitation checkups.