There are several common ways to treat chest scarring with a history of more than ten years. 1. Local subcutaneous injections: Steroid-based anti-inflammatory drugs are injected into the scar hyperplasia, which can effectively reduce the volume of scar hyperplasia, and is currently the most common treatment method. 2. Surgical excision: direct surgical excision of the lesion of scar hyperplasia, according to the size of the lesion and the integrity of the surrounding skin, to choose direct excision and suture, or the use of flap transplantation to repair the wound. 3. Laser therapy: including fractional laser, pulsed dye laser, etc., which can stimulate the skin to produce new collagen and repair scar tissue. 4. Others: including photodynamic therapy, microdermabrasion, etc., which are less commonly used in clinical practice. All of the above treatments can improve scar hyperplasia, but the occurrence of scar hyperplasia is related to one’s own constitution, age, local skin tension and the growth area of the lesion, and it is easy to recur, so the treatment effect varies from person to person, so it is recommended to choose the appropriate treatment after consulting a doctor.