People with scar constitution are prone to form hypertrophic scars or keloids with obvious symptoms after surgery, burns and trauma. At present, medical science can only diagnose the scar constitution according to the individual's performance, and can't really detect whether a person is a scar constitution by which detection index. In fact, there are very few people with real scar constitution. The diagnosis of scar constitution should be judged, and the treatment should be very cautious. Sometimes after treatment, the loss outweighs the gain.