Whether a patient will leave a scar after surgical removal of a mole depends mainly on the location of the mole in the whole skin level, as well as the size of the mole and the extent of the damage area of the surgical removal of the mole, as follows: a. It will not leave a scar: If the damage is in the superficial layer of the skin or in the superficial layer of the dermis, and the area is relatively small, it will not leave a scar at this time. Second, it will leave a scar: If the depth of the surgical excision reaches the deep dermis and the area of the mole is relatively large, in order to remove it cleanly, the inevitable damage is relatively large, and it is very easy to leave a scar at this time. Because of the slow synthesis of collagen fibers in the skin after trauma, it is easy to cause a large loss of elastin, so moles with larger and deeper areas are easy to produce some scarring after surgical removal. Therefore, for whether surgical removal of moles will leave scars or not, it mainly depends on the above aspects.