Children sleep breathing phlegm sound may be caused by congenital laryngeal wheezing, pediatric bronchitis, pediatric tonsillitis and other causes, different causes of different treatments, common treatments are medication, surgery and so on. 1. Congenital laryngeal stridor: generally caused by laryngeal cartilage softening, immaturity and other reasons, generally around 2 years old can be relieved by themselves, no special treatment. Usually try to reduce the alarm and stimulation, prevent colds and diarrhea, pay attention to nutrition. 2. Pediatric bronchitis: when the inflammatory reaction stimulation can make the pharynx phlegm volume increase, so that the child has phlegm sound when sleeping, the patient can follow the doctor’s instructions to use azithromycin, amoxicillin and other drugs for treatment, but also follow the doctor’s instructions to use aminoglutethimide, N-acetylcysteine and other phlegm medication for treatment, the disease generally do not need to be surgical treatment. 3. Pediatric tonsillitis: due to repeated stimulation of inflammation, glandular lymphatic tissue and connective tissue hyperplasia, glandular hypertrophy, soft, protruding beyond the palatal arch, if the tonsils are over-enlarged can cause breathlessness, snoring and other manifestations during sleep. At this time, we should pay more attention to rest, drink more water and strengthen nutrition. Take antibiotic treatment as the main, such as penicillin class; if necessary, feasible tonsillectomy. There may be other reasons for the phlegmatic sound of the child’s sleep breathing, so it is recommended to consult a doctor in time to have it evaluated by a specialist. All of the above medications should be used under the guidance of a doctor, avoid self-medication.