Deep second degree burns leave a scar and it is impossible to return to normal skin as it was. Deep second degree burns are due to the deep dermis is damaged, the dermis layer depth varies, the recovery time of deep second degree burns also vary, usually need more than 3 weeks to heal, deeper deep second degree wounds may need 1~2 months to heal, if the wounds are judged to be deeper, it is recommended to perform surgical treatment, to shorten the time of healing, and improve the quality of healing. After healing of deep second-degree burn wounds, during the proliferation period of 3~6 months, scar hyperplasia will gradually appear, scar redness, heightened, itchy, and gradually aggravated, even after the proliferation period, it is difficult to return to the pre-injury normal condition. Therefore, scar prevention treatment should be carried out immediately after the healing of deep second-degree burns. It is recommended to go to the burns department of regular hospitals, consult with experienced doctors, formulate a treatment plan, take strict precautions, and follow up regularly, in order to achieve good results and minimize the degree of scar proliferation as much as possible.