McMurdo’s minimally invasive rotational mammoplasty is unique for palpation-negative breast lesions and multiple lesions, with minimal incisions and a combination of therapeutic and cosmetic results. However, all procedures carry risks, and common complications include postoperative bleeding, hematoma, and subcutaneous petechiae formation. Hemorrhage is the most common complication of McMurdo surgery in all guidance modalities, accounting for about 2-3% of cases. Patients may experience postoperative bleeding in the resected area, with localized hematoma and subcutaneous petechiae formation. The main causes are: Large trophoblastic vessel injury around the lesion. Since it is not possible to stop the bleeding under direct visualization, postoperative hemostasis can only be achieved by local compression and postoperative bandaging with an elastic bandage for 24-48 hours. Small hematomas usually do not require treatment and are usually resolved within 3 months. Larger hematomas or those with active bleeding that cannot be stopped by pressure bandaging require further treatment. Subcutaneous petechiae also do not need to be treated and can be absorbed and fade away on their own in about 2 weeks after surgery. To avoid postoperative bleeding, patients are advised to avoid strenuous exercise for 2 weeks after surgery.