Sleeping “snoring” seems to be something that is too common in our daily lives, and therefore not taken seriously by the general public or even medical professionals. And children snore because it has a certain “hidden” is more likely to be ignored by parents. In fact, the relevant scientific research has confirmed that a small “snore” will bring great harm to the body, as children are still in a special stage of physical development, snoring may bring lifelong damage to the child. So, what exactly is the harm that “snoring” can bring to a child? First of all, “snoring” when the child is open-mouthed whistling, and our body’s normal whistling pattern is through the nose whistling. When there is open mouth whistling, through the nasal whistling will be weakened or disappeared, and the lack of airflow “stimulation” of the nasal cavity will be stunted, resulting in the reduction of space in the nasal cavity, thus further increasing the proportion of through the mouth whistling, and even the phenomenon of open mouth whistling during the day when not sleeping. At the same time, long-term transoral whistling can cause abnormal oral development, resulting in a high arch at the top of the mouth (i.e., the bottom of the nasal cavity), and the high arch at the top of the mouth can cause a decrease in the left and right diameters of the mouth, further reducing the area of the dental bed, resulting in misaligned teeth and protruding upper teeth. In addition, long-term open mouth whistling will also cause jaw dysplasia, narrow jaw, recession and other manifestations. The above series of changes will eventually cause the child’s facial development abnormalities, affecting the child’s face for life. Second, the serious “snoring” will cause the temporary cessation of whistling or hyperventilation, which causes a reduction in the oxygen content of the blood, this situation in the medical called “sleep apnea hypoventilation syndrome”. Once the snoring to this extent, the harm is even greater. We know that each of our body cells physiological activities are inseparable from oxygen, once the oxygen content of the blood is reduced, it will cause damage to various organs of the body. The brain, as the body’s most oxygen-consuming organ, is the first to bear the brunt of the damage caused by low oxygen. Studies have confirmed that hypoxia causes delays in neurological development and decreases in cognitive and logical thinking skills. Several surveys have found that children with sleep apnea hypoventilation syndrome have significantly poorer academic performance than the average child. In addition, the low oxygen brought about by snoring can also cause hyperactivity, inattention and other neuropsychiatric symptoms in children, a large-scale survey from Taiwan found that about 40-50% of children with sleep apnea hypoventilation syndrome will be hyperactive, inattentive and other phenomena. Of course, in addition to the neurological damage caused by hypoxia, other organs in the body also suffer from hypoxia, mainly in the form of loss of appetite, stunted growth, reduced immunity, and bedwetting at night. In short, the danger of sleep apnea hypoventilation syndrome to children is systemic. Furthermore, children who snore are prone to complications such as “rhinitis” and “otitis media”, the reason is that children who snore are mainly caused by adenoids and tonsils enlargement. The adenoids are a mass of lymphatic tissue located at the back of the nasal cavity, similar to the tonsils, which are more developed in childhood and can help improve immunity. However, when the adenoids are overly enlarged they can cause obstruction in the back of the nasal cavity, thus affecting the drainage of nasal secretions and making the nasal cavity less able to clean itself, causing symptoms of rhinitis such as runny nose. In addition, there is a tube between our ears and nose, which we call the “Eustachian tube”, and this is the only way for the ears to communicate with the outside world, and through the constant opening and closing of this tube, the ears can ensure that the internal air pressure is consistent with the external atmospheric pressure and maintain normal function. The only opening of the eustachian tube is located at the back end of the nasal cavity. When adenoids become enlarged, they can block the eustachian tube, creating negative pressure in the ear and causing otitis media manifestations such as fluid accumulation in the ear. If this condition persists for a long time, it can significantly affect the child’s hearing and cause conductive deafness. Children usually do not purr as loudly as adults because their pharyngeal muscles are relatively underdeveloped and strong, so they are somewhat “hidden” and easily ignored by parents. So, what kind of symptoms should parents be alert to when their children may have snoring problems? When the child appears to sleep open mouth whistling, whistling sound coarse, sleep unstable, frequent turning, like to sleep on their stomachs and other situations should be carefully observed whether the child has this problem, if necessary, timely hospital consultation, so as not to delay the child’s condition, affecting its growth and development, leaving a lifetime of “regret” to the child.