The purpose of plastic surgery to treat scars is to make the obvious scar tissue smaller and try not to leave obvious traces. One of the ultimate ways to do this is to remove scars. External skin injury will produce harmful scar tissue in the healing process, which is different from normal surrounding tissue. It's called scar or scar. If the scar is serious, it may seriously affect a person's character or future. It is easy for most patients to mistakenly think that scars can be completely removed without leaving any traces as long as doctors are skilled, but scar removal surgery only restores the original scars to the original state before scars appear, and it is impossible to completely remove them, because new scars will be formed after skin healing after surgery. Just narrow the width of the scar or change the direction of the scar to the direction of the wrinkles. According to the cause, depth and direction of scar, it has an influence on the difficulty and result of operation.