Adenoids, also known as tonsils or proliferators, cause nasal congestion, open-mouth breathing, sleep snoring, coughing, breathing difficulties and other symptoms due to repeated stimulation of inflammation for some reason. Severe respiratory suspension can occur, similar to tonsillar hypertrophy symptoms. For this reason, when children with such symptoms should go to a regular hospital for early examination and timely treatment to avoid misdiagnosis and delayed treatment. Local symptoms of adenoid hypertrophy: children’s nasopharyngeal cavity is narrow, such as adenoid hypertrophy blocking the posterior nostril and pharyngeal pharynx, can cause the occurrence of symptoms in the ear, nose, throat and other five senses. 1.Ear symptoms: obstruction of the pharyngeal orifice of the eustachian tube causes secretory otitis media, resulting in hearing loss and tinnitus. 2, nasal symptoms: often complicated by rhinitis and sinusitis, with symptoms such as nasal congestion and runny nose. When speaking with an occlusive nasal sound, snoring sound when sleeping, and sleep apnea in severe cases. 3. Pharynx, larynx and lower respiratory tract symptoms: As the secretions flow downward and stimulate the respiratory tract mucosa, it often causes nighttime coughing paroxysms and is easily complicated by bronchitis. 4, adenoid face: due to long-term open mouth breathing, resulting in impaired facial bone development, jaw bone becomes longer, palate bone high arch, dental alignment, upper incisors protrude, lip thick lack of expression, the so-called “adenoid face” Adenoid hypertrophy systemic symptoms: children manifest anorexia, vomiting, indigestion, followed by malnutrition. Inadequate lung expansion due to poor breathing can lead to thoracic deformities. Poor breathing at night can leave children in a long-term hypoxic state and endocrine dysfunction, causing growth and development disorders. Parents may find that their children have symptoms such as inattention, mood swings, night terrors, teeth grinding, night sweats, and bedwetting. The main causes of adenoid hypertrophy: cause one, their own factors: the common cause of adenoid hypertrophy is inflammation such as acute and chronic rhinitis, tonsillitis, influenza and other recurrent attacks, so that the adenoids occur pathological hyperplasia. This leads to increased nasal obstruction, obstructing nasal drainage, rhinitis and sinusitis secretions stimulate the adenoids to continue to proliferate, forming a vicious circle of mutual cause and effect. The second reason, environmental factors: allergic reactions lead to local edema, which can lead to adenoid hypertrophy, this type of patients are mostly accompanied by other allergic diseases, such as allergic rhinitis, allergic asthma, pollen, dust mites, cold air allergies and other more common. If adenoid hypertrophy is not treated in time, it will not only affect the occurrence of other ear, nose and throat diseases, but will also have a great impact on the growth and development of children, and will also affect their learning and life, with the following main hazards; adenoid hypertrophy is easy to form “adenoid face” because of the narrow nasopharynx of children. When adenoid hypertrophy, nasal congestion affects breathing and long-term mouth breathing, airflow impact on the hard palate will make the hard palate deformation, high arch, over time the facial development will be deformed, the upper lip short thick cocked, lower jaw drooping, upper incisors protruding, looks like a piggyback or ugly duckling, medically known as the “adenoid face”. Adenoid hypertrophy causes hearing loss and ear disease: due to the blockage of the nose caused by adenoid hypertrophy, resulting in upward drainage of nasal snot, resulting in obstruction of the pharyngeal opening of the eustachian tube, which can easily cause secretory otitis media, resulting in hearing loss and tinnitus symptoms. Adenoid hypertrophy can cause children to be mentally imbalanced and unresponsive: children with adenoid hypertrophy are prone to ischemia and hypoxia in the head due to long-term mouth breathing and lack of ventilation in the nose, resulting in mental depression, headache, dizziness, memory loss, and unresponsiveness. Adenoid hypertrophy seriously affects children’s growth and development: Because children need a lot of oxygen for development, and snoring will make children seriously lack of oxygen during sleep, which directly leads to insufficient oxygen supply for brain development, causing a decrease in secretion of growth-promoting hormone, which not only affects children’s height, but also decreases physical resistance, and will affect children’s future intellectual development.