Pathological scar is a common plastic surgery disease,including hypertrophic scar and keloid, which is mainlycaused by excessive healing and excessive proliferation offibroblasts after skin injury. The appearance of it is higherthan the normal skin, often accompanied by pruritus, ulcersand other uncomfortable symptoms and even affects themental health of patients [1]. A pathological scar mainlyoccurs in burn patients or postoperative patients. Theoccurrence of pathological scar is greatly affected by ageand skin color. Pathological scars are mostly distributed onthe earlobe, face, arm, shoulder, back and chest. At present,the etiology of pathological scar is not clear, and there is nounified treatment standard for the treatment of this disease.The main treatments are surgery, drug injection, radiotherapyand cryotherapy [2]. However, the recurrence rateof pathological scar is high in all kinds of treatments [3].So the treatment of pathological scar is still a difficultproblem for plastic surgeons.