Scar is often referred to as a scar. In daily life, people face scar formation after unfortunate encounters with various traumatic injuries, burn wounds as well as inflammatory infections, surgical treatments, etc. So, what should be done to prevent and treat scarring? First of all, before scar formation, we need to properly treat the skin injury that has occurred, strictly control the infection, and use various methods of early intervention to promote wound healing. In the early stage of scar formation, especially within six months, we can also use comprehensive treatment such as local compression therapy, topical medication application, scar patch topical application and functional rehabilitation training, and local injection medication control when scar hyperplasia is obvious. After half a year or one year, the scar gradually becomes mature and stable, then it belongs to the scope of treatment. The main tool is surgery with other comprehensive treatment, which requires the doctor to make a choice according to the specific situation of the scar. Only in this way using a combination of methods of prevention and treatment can the scar proliferation be inhibited and a good appearance obtained.