Mastectomy surgery may carry risks of wound infection, local hematoma, and skin damage. 1. Wound infection: patients with mastectomy surgery may have localized redness of the skin, accumulation of pus under the skin, and wound infection. 2. Local hematoma: after mastectomy, the blood vessels around the lesion are relatively full, if the bandage is shifted or the compression is not tight, it may cause bleeding in the residual lumen of the catheter and lead to hematoma. 3. Skin damage: the lesion of breast duct is relatively close to the skin, which may be damaged during the surgery, leaving scars and causing skin damage. After mastectomy, if there is any discomfort, go to the hospital in time and get regular treatment under the doctor’s guidance.