Malignant breast nodule without proliferation does not necessarily require total excision of the breast, and the choice of surgery should be based on the patient’s physical condition and willingness to undergo surgery. 1. Physical condition: if the breast nodule is malignant but has not spread, it usually belongs to the early stage of breast cancer, and the diameter of the breast cancer tumor is still relatively small, and there is no distant metastasis and lymph node metastasis, the tumor tissue can be removed through extended tumor excision and the breast can be preserved. 2. Willingness: If a woman is older and has no need for breastfeeding and breast preservation, she can also choose total mastectomy according to her own situation and willingness to achieve the goal of radical treatment of breast cancer. It is recommended that patients with malignant breast nodules should consult the doctor in time and actively cooperate with the doctor in choosing the appropriate method of treatment.