Doing surgery after the wound rot a hole, most of the wound infection, wound tissue necrosis, etc., can be sterilized with hydrogen peroxide, but you need to go to the hospital first to clean the wound. If the wound is infected, you need to open the wound first, drain it thoroughly, discharge the pus in the wound, remove the pus tire, and then finally rinse the wound with hydrogen peroxide and saline alternately, fill in the gauze drainage, and change the medicine every day. If the tissue is necrotic, you need to clean up the necrotic tissue first, make the wound fresh, and then use hydrogen peroxide, saline alternately rinse, also need to drain the wound, change the medicine every day. Therefore, the surgical wound ulceration, you need to go to the hospital in time, let the doctor according to the situation of treatment. It is recommended to go to the hospital to improve the examination, after a clear diagnosis to take targeted treatment, not private treatment, so as not to cause adverse consequences.