Deep acne pits on the chin are depressed scars left behind after acne healing, and commonly used improvement methods include filler injections and fractional laser treatments. 1. Injectable filler treatment: If the depressed scar is relatively deep, it is usually difficult to recover by itself, it can be treated by injectable filler, such as injecting hyaluronic acid or autologous fat, etc. By filling these materials, the local skin can be re-flattened to improve the phenomenon of acne pits. 2. Fractional laser treatment: Fractional laser treatment can also be used to improve depressed scar, through this treatment can effectively stimulate collagen regeneration of the skin, thus improving the situation of localized depression of the scar; combined with the growth factor gel drugs to enhance the efficacy of the treatment after laser therapy. The deep acne pits left by chin acne are recommended to actively go to the regular hospital, follow the doctor’s instructions to use the appropriate program standardized treatment.