Generally, adenoid facies will be slightly improved through orthodontic treatment, but it cannot be fully corrected, and surgical treatment is needed for serious conditions. 1. Adenoid facies refers to the abnormal facial development caused by adenoid hypertrophy, which is manifested by the elongation of the maxilla, thick lips and protruding upper incisors. Generally, adenoid facies can be slightly improved to a certain extent by orthodontic treatment, however, it is not possible to carry out a comprehensive correction because it is difficult to recover once adenoid facies are formed. 2. Therefore, for some patients with severe adenoid facies, in addition to orthodontic treatment, adenoidectomy or plastic surgery is also required. Adenoid facies is commonly seen in adenoid hypertrophy and inflammation of adenoids, and patients may also have symptoms such as nasal congestion, mental depression, memory loss, slow reaction, and dull face. To summarize, patients with adenoid facies need to go to the hospital in a timely manner, cooperate with the doctor to carry out standardized treatment, and have regular follow-ups so that the doctor can monitor their condition.