Hyperplastic scars mostly occur in wounds where the depth of damage is only to the dermis. The appearance of hyperplastic scars is related to the individual’s physique, and the treatment method for hyperplastic scars is currently ideal through a combination of excision and radiotherapy, which is effective and popular among patients with hyperplastic scars. 1. Scar injection treatment For obvious hyperplasia, keloid, certain depressed keloid scars, or certain stages of scar growth, as a treatment or as a means to relieve symptoms, doctors can perform injection treatment on keloid scars. Keloid scars are not suitable for invasive treatment and are often treated with local injections of medications to soften the scar for symptom relief. For significantly proliferating scars, drug injections within the scar tissue are often used to stop the abnormal growth or as a minimally invasive treatment method. Injectable scar treatment is a relatively conservative treatment method, which cannot make the scar disappear or shrink, but only plays the role of improving the function, calming the scar and softening the scar. 2.Medication There are many drugs for the treatment of keloid scars, currently the more commonly used drugs are steroids and silicone preparations. Local treatment of keloid can be done by injecting steroids and other drugs inside the lesion, external use of retinoic acid, electron radiation, etc. For severe and extensive lesions, systemic treatment can be used at the same time. 3.Surgical treatment If the scar is already formed or aging, it should be generally removed surgically before radiation therapy. Scar removal methods include excision and suturing, skin grafting, flap grafting and skin soft tissue expansion with scar treatment. Scar abrasion is a method of using mechanical abrasion to treat keloid scars, mainly used to treat acne scars. Currently, scar abrasion tools mainly use stainless steel olive-shaped abrasive heads. To alleviate the depressed appearance of certain depressed keloid scars, tissue fillers in the depressed area can be adopted. Fillers can be made of autologous fat, tissue flaps or artificial materials. For small and shallow depressed scars, local scar tissue filling can be used; for small but deep depressed scars, depending on the location, local fat flap or muscle flap transfer, or free transplantation of dermis, fat, fascia, cartilage, bone tissue, or tissue substitute implantation must be used to completely fill the depressions; for larger and deeper depressed scars, the excision of the scar is not possible. For larger and deeper depressed scar, if the wound cannot be sutured directly after excision of the scar, it is necessary to perform flap, dermatome or myocutaneous flap surgery and repair deep tissue defects such as tendons, nerves and bones at the same time or later, in order to restore function and improve appearance.