Whether a decade old scar can be removed depends on factors such as the size, area, depth, shape and location of the scar. For a decade old scar, i.e. an old scar, if the scar is small, shallow in depth, and relatively regular in shape, it may be removed by a combination of treatment, such as topical scar treatment medication, and fractional laser plus local injection treatment, after several treatments. If the scars are larger, deeper and irregularly shaped, they are usually difficult to remove completely. In addition, it is related to the patient’s personal constitution. In case of patients with scars, not only combined treatment but also radiotherapy should be used, some patients will have their scars flattened and tend to normal skin after treatment, but they cannot be completely removed. Pay attention to skin care during scar treatment, avoid direct sunlight on the skin, avoid smoking or drinking alcohol, and consume less spicy and stimulating food.