According to the current medical level, the best way to treat this permanent scar is to polish it with drugs in the beauty salon, but it will be done many times, which is expensive and painful. Using anesthesia during the operation will lead to new scars, so it will be very painful, but the therapeutic effect is still ok. I recommend this method, but the final effect remains to be discussed, and it cannot be guaranteed to be completely removed. Let's go to the hospital to check the depth. If it is deep, it seems that skin grafting can only be used.