Children sleeping with their mouths open need to clarify the cause of sleeping with their mouths open, which may be due to colds, sinusitis, adenoid hypertrophy and other causes. General treatment, medication and other improvements can be taken. 1. Colds: If the patient has a cold, there will be nasal congestion, sneezing, runny nose, fatigue and other uncomfortable symptoms, so that sleep with mouth open, if the symptoms are mild can pay attention to the child to keep warm, encourage the child to drink a lot of water, and maintain adequate sleep. If necessary, you can choose pediatric cold granules and other drugs under the guidance of the doctor. 2. Sinusitis: If the child suffers from sinusitis may appear nasal congestion, headache, runny nose and other symptoms, resulting in the child’s breathing is not smooth, open mouth to sleep, it is recommended that the application of saline under the guidance of the doctor to flush the nose, if there is a bacterial infection can be selected azithromycin, cephalosporin, and other drugs to treat. 3. Adenoid hypertrophy: adenoids have the phenomenon of enlargement may have an impact on breathing, at the same time there may be a runny nose, pharyngeal discomfort, ear stuffiness and other symptoms, if necessary, radiofrequency ablation and other surgical treatment. Children sleep with their mouths open, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment. All of the above medications should be used under the guidance of a doctor.