McMurdo is a minimally invasive rotational system for the breast, mainly through the puncture of breast nodules to play a diagnostic role. If the nodule is too deep, the puncture needle will easily penetrate the chest wall and cause bleeding in the chest cavity; fourth, the removal of the nodule by McMurdo is likely to cause residue; fifth, the cost of instruments and surgery is more expensive, and the hospitalization cost is more than that of conventional surgery.