Scars generally refer to keloid scars, and keloid depressions can be repaired with fractional laser treatment, hyaluronic acid fillers, and autologous fat fillers. 1. Fractional laser treatment: Generally based on the photothermal effect, the laser light generated is evenly divided into a number of small beams, which helps to penetrate the deeper layers of the skin, thus helping to repair keloid scars and depressions. 2. Hyaluronic Acid Filling: Hyaluronic Acid is usually injected into the skin to fill the skin, which can repair the scar depression. 3. Autologous Fat Filling: Usually, excess fat is extracted from other parts of the body and injected into the damaged area after standardized treatment, so as to achieve the effect of repairing the depressed scar. There are different ways to repair sunken scar, so patients are advised to go to regular hospitals and choose the right way to repair under the guidance of doctors.