Adenoid face is a face with long maxilla, high arched palate, thick lips, uneven teeth, protruding upper incisors and other facial bone development disorders. Adenoid hypertrophy mostly occurs in childhood, mostly due to inflammatory stimulation of adenoid pathological hyperplasia, the enlarged adenoids will block the nasopharyngeal cavity, children with long-term open-mouth breathing, affecting the development of the facial bones and resulting in adenoid facies. The airflow impact of long-term open-mouth breathing will cause the maxilla to become longer, the palate to become high and arched, and other facial bone development disorders, dental irregularities, the maxillary incisors protruding, and other abnormalities in dental development, which will also lead to the inability to close the lips, lip hypertrophy, lip muscle laxity, smile revealing the gums, as well as staring at the face with a dull expression of less or even the lack of facial expression, and so on. Once adenoid face is formed, it is difficult to recover. It is suggested that parents should consult the doctor in time after discovering adenoid hypertrophy in children and follow the doctor’s instructions to carry out standardized treatment, so as to avoid the emergence of adenoid face.