Laser treatment will cause the scar to be thinned and reduced in size, resulting in an improvement in its appearance. Keloid scar is a normal product of recovery from skin injury, a tissue structure formed by the abnormal proliferation of newborn granulation tissue, which is usually slightly protruding from the surface of the skin and may be accompanied by redness and itching symptoms. There are many kinds of laser treatments commonly used for treating keloid scars, such as carbon dioxide laser, which uses the thermal energy of laser to cause thermal damage to the internal scar tissue, thus promoting the regeneration and rearrangement of collagen tissue in the scar, thus achieving the purpose of fading scars; and dye laser, which can occlude the local capillaries of keloid scars to soften the keloid scar and inhibit keloid scar proliferation. The prognosis for people with keloid scarring is poor. After treatment, we must pay attention to strengthening local care to avoid infection. Due to the different physical characteristics of individuals, the treatment effect will also have some differences, patients who are willing to be treated are recommended to go to the regular medical institutions, the specific circumstances need to consult the local medical institutions.