It is not uncommon to see children with hemifacial hypoplasia, but many parents do not feel that it is a big deal and are reluctant to treat their child. Instead, they feel that the accompanying macroglossia, microtia, or even a small paronychia are more worthy of treatment than facial deviation. It is true that no one’s face is absolutely symmetrical and a little deviation is not a big problem, but what if the deviation is severe? In addition to facial deviation, dental problems, chewing problems, pronunciation problems, and even hearing problems may come along with it, and the severity may get worse as the facial bones and soft tissues develop. Careful parents, have you ever noticed? Hemifacial dysplasia is associated with a variety of clinical manifestations of varying severity, and various deformities change as the child’s face develops. Therefore, this type of disease is easy to diagnose, but complex to treat, requiring a series of treatment plans based on the age and severity of the patient’s visit, a truly individualized program. Many experienced maxillofacial plastic surgeons often find it difficult to see this type of disease. Sometimes even if there is a good plan, it is not accepted by the patient because of the long treatment period and the complexity of the process. In our country, since these diseases require self-funded treatment, we also often have to develop a compromise plan considering the financial situation of the patient’s family, which cannot be considered a pity. Since the deformity of these developmental diseases worsens as the face develops, increasing the difficulty of surgery, the current international opinion of most doctors favors early intervention. In severe cases, in our experience, treatment can begin before school age. This is a CT image of a 6-year-old child, which shows very visually the asymmetrical jaws and the hypoplastic side of that face.