Scar is both a familiar and unfamiliar term to people in modern society. It is familiar because it is often seen in the healing process of various diseases, but unfamiliar because people do not understand its occurrence, development, treatment, and healing, which brings inconvenience and inner pain in life and work. Because scar formation can affect both aesthetics and function, understanding scarring is a key issue in treatment. It is important to understand that scarring is an inevitable product of the trauma healing process and that scar healing of the skin is an important part of the body’s self-defense system. The closed wounds or open wounds formed by trauma or septic infection rely on the generation of scar tissue to connect the two sides of the wounds, to fill the bottom of the wounds, and to gather the wound edges of the wounds, along with the new skin crawling to the inner epidermis of the wound edges, finally covering the wounds to make them heal and restore the continuity and defensive ability of the skin. The new tissue is called scar. Due to the different causes of the wounds, the repaired keloid scars have their own characteristics, which can be professionally classified into different types, and the common ones are hyperplastic keloid, keloid, atrophic keloid and contracture keloid. For these common types of keloid scars, we currently have a whole series of methods to repair them so that they can maximize their recovery after the implementation of the right treatment methods. 1, Proliferative scar: Proliferative scar is a scar that does not stop after the skin injury heals, and this repair work gradually develops into a protruding skin, irregular and uneven in shape, and very hard red congestion. Subjectively, there is pain and itchiness. This can generally happen for six months to one or two years, and then gradually softens and flattens, but the morphology still has obvious deformities, and should be treated with plastic surgery, and surgery or other treatment methods can be recovered more ideally. 2, keloid: keloid occurrence in the normal population is often not very high, due to its own characteristics and common in the back of the chest, earlobes and other parts. The skin is characterized by significant proliferation with various stimuli including surgical excision, and rebound or retaliatory growth is more pronounced than before. After a clear diagnosis, especially a specialist diagnosis, a treatment plan should be chosen very carefully, usually with conservative treatment. In recent years we have boldly conducted research on this disease, breaking the forbidden zone that keloid scars cannot be treated surgically. In our comprehensive scar treatment center, we have developed a comprehensive approach to the treatment of this disease. The results are obvious, with more than 90% of the patients reporting good results. 3. Contracture scar: As a special lesion, it causes obvious functional and morphological disorders on all flexors of the body. If it occurs in childhood, it can also cause developmental disorders, and is a kind of scar that must be solved. Treatment is based on scar release and flap or skin grafting. And after surgical treatment, long-term physical therapy and functional exercise and prevention of re-contraction is an active and necessary effort. The above types of scar are only some of the many common conditions of scarring that require comprehensive treatment in order to restore the patient’s ability to live and work normally.