Breast cancer patients are at risk of recurrence with or without breast conservation surgery. Recurrence after breast conservation surgery is mainly due to multicentric lesions or surgical margins. Once local recurrence of breast cancer occurs after breast-conserving surgery, it may lead to a decrease in long-term survival. Therefore, postoperative radiotherapy is usually applied adjuvantly to control local recurrence, and if necessary, systemic intravenous chemotherapy and endocrine therapy may also be administered, which may cause radiation damage to the skin and affect the patient’s cardiopulmonary function and other adverse effects. Although post-breast-conserving radiotherapy can reduce the recurrence rate after breast-conserving surgery from 20% to 3%-8%, it is still higher than the recurrence rate of local total mastectomy. Breast-conserving surgery is not suitable for all patients with breast cancer, such as breast cancer with extensive or diffusely distributed malignant characteristic calcified foci, which are difficult to achieve negative margins or ideal shape; tumors with positive margins after extensive local excision and still cannot guarantee negative pathological margins after re-excision; and patients with inflammatory breast cancer, which should not be treated by breast-conserving surgery. In addition, since breast cancer has developed into one of the most common malignant tumors that threaten women’s physical and mental health, it is recommended that women should master the self-examination methods of breast and develop the habit of self-examination of breast.