Adenoid facies at the age of 14 is mainly caused by adenoid hypertrophy in childhood. The change of facies is irreversible and can be improved to a certain extent by orthodontic treatment after removing the primary disease. Adenoid face is mainly caused by the enlarged adenoids blocking the nasal respiratory channel, so that children are forced to open their mouths to breathe, affecting the development of the maxillofacial region. The main manifestations are thickened lips, shallow nasolabial folds, sunken nose, crowded teeth, protruding upper jaw, high arched palate and other jaw and facial deformities. Adenoid facies can be improved by treating the primary disease through conservative treatment and surgical treatment, restoring normal nasal breathing, and then using orthodontic instruments such as functional orthodontic appliances and fixed orthodontic appliances under the guidance of orthodontists. In daily life, it is necessary to pay attention to the prevention of cold and flu, correct the bad habit of open-mouth breathing, and form the normal nasal breathing habit, which is conducive to the improvement of adenoid face.