The medical statement of whether the face shape can be corrected without mouth breathing may refer to the adenoid face caused by long-term mouth breathing. Due to long-term open-mouth breathing more often than not, the face will have a longer maxilla, uneven teeth, protruding upper incisors, and thick lips. If the adenoid face is formed, clinical treatment is needed, while correction can be done when it is not formed. In addition, open-mouth breathing needs to be clarified as to what the cause is and needs to be treated for the disease first. Common predisposing diseases include adenoid hypertrophy, acute rhinitis, colds, etc., so correction needs to be done after excluding the effects of the disease. If the open mouth breathing is caused by bad habits, you can choose to self-correct at a younger age, which is relatively easier and may be fully recovered; if the facial skeletal muscles have developed, it may be more difficult to self-correct, and some patients can wear orthodontic braces under the guidance of a doctor to help correct. If the facial bones and muscles are already deformed, orthodontics and facial orthodontics can be carried out with the help of professional doctors, but it is more costly and the efficacy may not be exact. In addition, if children have adenoid hypertrophy, they may have nasal congestion and snoring at night, and if necessary, surgery is needed to remove the adenoids to prevent the formation of adenoid face. In addition, adenoid face is mostly seen in children, due to various inflammatory stimulation of the adenoids, so parents should pay attention to children’s breathing situation, such as the discovery of mouth breathing habits promptly correct; if there is a cold, rhinitis and other diseases need to be treated in a timely manner, so that the nasal cavity ventilation, help prevent mouth breathing face.