Snoring in bed is not exclusive to adults; many children also snore when they sleep, even louder than adults. As a common perception, most parents assume that their children’s snoring is a good sleep. However, with the development of modern sleep medicine, people gradually realize that children’s snoring in sleep may be a sign of sleep breathing disorder, which may affect children’s intelligence and physical development, etc. Especially with the improvement of people’s material living standard, children’s weight has increased significantly or even become overweight in comparison with the past, and children’s snoring in bed has become more common. In China, about 15% of children suffer from different degrees of snoring while sleeping, or accompanied by apnea or breath-holding. The prevalence of obstructive sleep apnea hypoventilation syndrome (OSAHS, snoring for short), which developed from snoring as the main symptom, is also more than 1% in children. The general age of onset is from 2 to 10 years old, with a high incidence at 4 to 6 years old. However, because people do not know enough about the danger of pediatric snoring, fewer people take the initiative to consult a doctor for snoring and breath-holding symptoms. Pediatric snoring is a relatively common obstructive respiratory disease that affects the physical and mental health of children such as intellectual and physical development. Snoring and breath-holding symptoms often occur during sleep, which can directly lead to lack of oxygen during sleep and inability to enter deep sleep. If not treated in time, it may lead to bad mood, sleepiness, abnormal behavior, bedwetting, headache, decreased academic performance, slow growth and even cause hypertension. Severe snoring may induce sleep epilepsy by frequent apnea and reduced oxygen intake. Some studies have shown that the rate of ADHD in children with sleep breathing disorders is 2 to 3 times higher than that of ordinary children. The most common cause of pediatric snoring is excessive enlargement of the tonsils and adenoids. During sleep, adenoid hypertrophy leads to increased resistance during the inspiratory period, and the soft palate and the root of the tongue close to the posterior pharyngeal wall; tonsillar hypertrophy expands the lateral wall of the oropharynx to the middle, and the left and right diameter of the oropharynx shrinks, forming nasopharynx and oropharynx narrowing and obstruction. When the air flow passes, the impact on the mucosal edge of the pharynx and the secretions on the mucosal surface cause tremors, resulting in coarse snoring, breath-holding and other symptoms. In severe cases, after the diagnosis is clear, the best way is to perform relevant surgical treatment. The most common cause of pediatric snoring in clinical practice is nasal congestion in children. Some children do not have obvious nasal congestion or much nasal discharge during the day, but at night they have nasal congestion and open-mouth breathing and snore severely as soon as they go to bed. Generally, parents or non-specialist doctors usually consider that it is caused by rhinitis or sinusitis caused by “cold”, so they often use nasal drops, which can relieve some patients, but more children are ineffective or recurrent. In fact, most of these children are suffering from nasal congestion, open-mouth breathing and snoring during sleep due to adenoid hypertrophy blocking the posterior nostrils, and some of them are suffering from nasal congestion caused by combined rhinitis. For these children, we should not target all treatment to the nasal sinus inflammation that may not be particularly obvious, and blindly use medication, especially abuse of nasal decongestants, causing unnecessary damage to the nasal mucosa, and consider excessive adenoid hypertrophy in children with severe symptoms, and related surgical treatment. Another reason for a more frequent first visit is recurrent otitis media or hearing loss in the child. Overly enlarged adenoids cause snoring and also obstruct the pharyngeal orifice of the eustachian tube, leading to secretory otitis media and hearing loss. Therefore, parents should provide a detailed medical history and improve the examination to facilitate the diagnosis, so as to take early and comprehensive treatment for the cause. As an otorhinolaryngologist, parents are advised that if their children snore frequently, first of all, they should control their weight properly, try to avoid upper respiratory tract infections, and actively treat tonsillitis, rhinitis and other diseases, which can prevent and reduce snoring to a certain extent; if they snore seriously, especially with breath-holding, they should consult an otorhinolaryngologist as soon as possible and have their tonsils and adenoids removed or simply adenoids removed if necessary.