Adenoids are the body’s own organs. Adenoid facies are most common in groups of children under the age of 10, and usually begin to change easily when children are 3-5 years old, but there is no specific age for how long an adenoid facies is set, as it changes as a person grows and develops. Once formed, adenoid facies are difficult to recover on their own, but with timely and reasonable treatment, most can be corrected and basically returned to normal. The cause of adenoid face is adenoid hypertrophy and inflammation of adenoids that cause poor ventilation in the nasopharynx. In order not to interfere with normal breathing, some children will adopt open-mouth breathing, and gradually develop symptoms such as elongated maxilla, protruding upper incisors, thickened lips, and uneven teeth, thus forming an adenoid face. If a child has symptoms of open-mouth breathing and snoring, the onset may only be a few months, and most children can recover if parents find them early and bring them to the doctor for treatment. If the adenoids are enlarged, adenoidectomy is performed; if the adenoids are enlarged due to rhinitis or tonsillitis, otitis media, etc., nasal ventilation should be improved to avoid snoring and open-mouth breathing during sleep. At the same time, orthodontics is performed to improve the bite relationship, and you can go to dentistry for upper incisor correction as well as orthodontics. Due to the older age and longer onset, the bones are basically set, some facial skeletal deformities and teeth bite misalignment cannot be effectively corrected by conservative treatment, and surgical correction can be chosen at this time. After surgical treatment, the habit of open-mouth breathing is usually corrected, the lip muscles as well as the tongue muscles are trained, and orthodontic treatment such as braces can be used to correct the facial contour. In addition, since adenoid hypertrophy is mostly caused by colds, and children have low resistance and are susceptible, parents should pay attention to preventing children from catching colds during the flu season, reducing activities in public places, and urging children to exercise moderately to increase their resistance. If adenoid face is formed, the patient should also be given positive guidance psychologically to avoid negative psychological states such as introversion, low self-esteem and isolation due to the special face.