Whether the scars of more than ten years can be removed depends on the size, area, depth, shape and location of the scars. If the scar is small, the depth is not deep, the shape is regular, and it is not in the middle of the human body, combined treatment can be used, such as topical medicine for scar treatment, dot matrix laser plus local injection treatment, and the scar may flatten after multiple combined treatments. If the scar is particularly large, deep and irregular in shape, it is difficult to ensure excision. In addition, it depends on the constitution. If the scar constitution or the shape of the scar grows outward like a crab's foot, that is, keloids, it is more difficult at this time. You can use the method just mentioned plus radiotherapy. After comprehensive treatment, it may be relieved, but it cannot guarantee complete resection.