Laser can remove keloid scars, but with indications, smaller depressed atrophic keloid scars can consider laser treatment, larger depressed atrophic keloid scars or old keloid scars for laser treatment is less effective. 1. Smaller depressed atrophic scars can be considered for laser treatment, such as carbon dioxide fractional laser, which can promote the regeneration and remodeling of the collagen tissue in the scar area, and epidermal reconstruction of the scar tissue, so that the scar tissue can be restored to close to the normal tissue, and the effect of this technology is rapid, and usually can be maintained for a long time. 2. However, for large depressed atrophic scars or old scars, the effect of laser treatment is usually poor, and may need to be combined with injections and fillers, surgery and other ways to improve. Patients are advised to go to regular hospitals and choose the appropriate way of scar removal under the guidance of professional doctors.