Breast cancer surgical incisions that do not heal can be the result of symptoms such as wound infection, subcutaneous fluid buildup, and flap necrosis. Different diseases need different treatments to be carried out. 1. Wound infection: mainly because the wound is infected after surgery, it can be treated with oral antibiotics such as Denis and Levofloxacin, and daily dressing change, and the wound can be opened if necessary. 2. Subcutaneous fluid accumulation: general breast cancer surgery requires elastic bandage and pressure bandage to avoid the appearance of subcutaneous fluid accumulation, if there is subcutaneous fluid accumulation, consider puncture drainage treatment. 3. Necrosis of skin flap: Generally, it is necessary to change the medicine tomorrow and remove the necrotic tissues gradually; if the necrotic skin flap is large in scope, it is necessary to carry out skin grafting surgery. It is recommended to go to the hospital to identify the cause of the disease, and then according to the cause of targeted treatment.