Enlarged adenoids can easily lead to secretory otitis media, rhinitis, sinusitis, bronchitis, malnutrition, slow reaction, inattention and prolonged open-mouth breathing and affect the development of facial bones. Adenoids, also known as pharyngeal tonsils, proliferative body, is located in the junction of the parietal wall and posterior wall of the nasopharynx, between the two sides of the pharyngeal saphenous fossa. 6~7 years old children’s adenoids development for the largest, after the age of 10 years old, it is gradually atrophied to the basic disappearance of adults. The adenoids are enlarged and hypertrophied and cause corresponding symptoms as adenoid hypertrophy. Adenoid hypertrophy is more common in children aged 3~5 years old, due to the repeated stimulation of inflammation in the nasopharynx and its adjacent parts or adenoids, resulting in pathologic hyperplasia of the adenoids. Adenoid hypertrophy causes localized inflammation of the ear, nose, throat and larynx, leading to secretory otitis media, rhinitis, sinusitis, with symptoms such as nasal congestion and runny nose. Children with adenoid hypertrophy often have occlusive nasal sound when speaking, snoring during sleep, open-mouth breathing and affecting the development of facial bones, as well as chronic toxicity of the whole body and reflex neurological symptoms, manifested as malnutrition, slow reaction, inattentiveness, easy to wake up at night, teeth grinding, and enuresis. People with enlarged adenoids should pay attention to nutrition, prevention of colds and flu, improve immunity, active treatment of tonsillitis, rhinitis, upper respiratory tract infections and other diseases that can easily lead to adenoid hypertrophy, and surgical resection of adenoids if necessary. Adenoid hypertrophy, and the emergence of symptoms, it is recommended that is to seek medical advice, follow the doctor’s instructions standardized medication and treatment.