It is important to distinguish between cases. Congenital mandibular protrusion has a certain hereditary tendency, but acquired mandibular protrusion is usually not passed on to the offspring. Mandibular protrusion, commonly known as periosteum, is a dental and maxillofacial deformity caused by excessive forward protrusion of the mandible. Usually, the development of the body’s teeth and jaws, jaws and face is influenced by both genetic factors as well as environmental factors. Family history of mandibular protrusion has a certain genetic predisposition, and its inheritance mechanism is complex, most of them are polygenic, that is, if one of the parents shows congenital mandibular protrusion, the probability is that their offspring will also have mandibular protrusion. If the parents do not have a family history of mandibular protrusion, but due to acquired environmental factors, such as localized disorders during dental development, it is usually not passed on to the next generation. If jaw protrusion is found, you should seek medical treatment in time and actively cooperate with the doctor. Pay attention to oral hygiene care, quit smoking and drinking, and maintain a regular routine.