Breast conservation is not recommended for all breast cancers and should be considered on a case-by-case basis. Breast conservation is not recommended for breast cancer surgery because the patient has a large lesion that requires total excision, and for early stage patients it can be treated by partial mastectomy. Early stages of breast cancer can be treated with partial mastectomy when the lesions are small, and the lesions can be completely removed by partial mastectomy. When breast cancer is detected, the lesion is already large and partial mastectomy cannot remove the lesion completely, total mastectomy is usually recommended to achieve complete removal of the lesion. After total mastectomy, some patients need to undergo chemotherapy to control the progression of the disease or to completely remove the cancer cells from the body. After the surgery, chemotherapy drugs such as paclitaxel and doxorubicin can be used under the doctor’s instruction. After chemotherapy, patients may have nausea and vomiting and other adverse reactions, so they should take good care of themselves to relieve the adverse reactions. Breast cancer patients should be timely treatment, breast-conserving or total excision is recommended under the guidance of the doctor to choose, so as to avoid the spread of malignant tumors occur.