Keloid and hypertrophic scar are important complications of trauma and trauma. There are many reasons for scar formation. Burn, trauma, trauma, acne (acne), ear piercing and vaccination can all form scar hyperplasia and keloid to varying degrees. The preventive measures mainly lie in the immature stage before and during scar formation. Its main purpose is to remove all kinds of factors that cause scar hyperplasia as much as possible, reduce scar growth, prevent all kinds of deformities and dysfunction caused by scar on the body, and pay attention to minimize mechanical, chemical and thermal stimulation to the affected area when it is serious, so as to avoid repeated pulling, friction rupture and infection. Usually pay attention to prevent trauma, burns, ear holes, eyebrow lines, etc. So as not to damage the dermis, especially the parts with poor immune function, such as chest, shoulders and back. I usually eat alkaline food such as kelp. Because these foods can improve their scar constitution if they are eaten for a long time. If you wipe keloid with fresh ginger slices immediately, three times a day for 2-3 minutes each time, and rub it with fresh ginger for two or three times continuously, the fleshy tooth tissue will stop growing, the wound will not leave scars, and the skin surface will be as smooth as ever.